Dynamic Programming

Problem Name Online Judge Year Contest Difficulty Level
1 Trees Live Archive 2004 South Pacific 1
2 Cross-country SPOJ 1
3 Cut Ribbon Codeforces Codeforces Round #119 (Div. 2) 1
4 Tri graphs SPOJ 1
5 ACM (ACronymMaker) SPOJ 1
6 The Bale Tower TJU 1
7 Longest Palindrome UVA 1
8 Sums in a Triangle CodeChef 1
9 Wedding shopping UVA 1
10 What Goes Up UVA 1
11 Staircases Timus 1
12 Dividing coins UVA 1
13 The Tower of Babylon UVA 1
14 The Twin Towers UVA 1
15 Bridging signals Live Archive 2003 Europe - Northwestern 1
16 Take the Land UVA 1
17 Testing the CATCHER UVA 1
18 Dreamoon and WiFi Codeforces Codeforces Round #272 (Div. 2) 1
19 Palindrome 2000 SPOJ 1
20 Bicoloring UVA 1
21 Pilots SPOJ 1
22 Fibonacci Freeze UVA 1
23 Given Length and Sum of Digits... Codeforces Codeforces Round #277.5 (Div. 2) 1
24 Longest Common Substring SPOJ 1
25 Petya and Strings Codeforces Codeforces Beta Round #85 (Div. 2 Only) 1
26 Easy Longest Increasing Subsequence SPOJ 1
27 Optimal Array Multiplication Sequence UVA 1
28 Fishmonger SPOJ 1
29 THE DRUNK JAILER PKU 1
30 23 out of 5 UVA 1
31 ABC Path SPOJ 1
32 QAQ Codeforces Codeforces Round #447 (Div. 2) 1
33 Exploring Pyramids Live Archive 2005 Europe - Northeastern 1
34 How do you add? UVA 1
35 Candy SPOJ 1
36 Lucky Tickets Timus 1
37 New Year and Hurry Codeforces Good Bye 2016 1
38 Party Schedule SPOJ 1
39 Sums in a Triangle SPOJ 1
40 Enormous Input Test CodeChef 1
41 Aibohphobia SPOJ 1
42 Can you answer these queries I SPOJ 1
43 LATGACH3 SPOJ 1
44 Membership Management Live Archive 2010 Asia - Tokyo 1
45 Puzzles Codeforces Codeforces Round #196 (Div. 2) 1
46 Positive or Negative A2 Online Judge 1
47 The Double HeLiX SPOJ 1
48 Luggage UVA 1
49 Cutting Sticks UVA 1
50 Stacking Boxes UVA 1
51 Ilya and Queries Codeforces Codeforces Round #186 (Div. 2) 1
52 Scuba diver SPOJ 1
53 Binary Lexicographic Sequence Timus 1
54 Largest Submatrix UVA 1
55 Vacation UVA 1
56 Quasi Binary Codeforces Codeforces Round #300 1
57 Boredom Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 1
58 Fool the Police SPOJ 1
59 Milliard Vasya's Function Timus 1
60 Candy Live Archive 2008 Latin America - South America 1
61 Flowers Codeforces Codeforces Round #271 (Div. 2) 1
62 Omar A2 Online Judge 1
63 Two Ends SPOJ 1
64 Scientific Conference Timus 1
65 Army Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 1
66 Edit distance SPOJ 1
67 Hotels Along the Croatian Coast SPOJ 1
68 Tower of Babylon SPOJ 1
69 Hangover PKU 1
70 Mice and Maze Live Archive 2001 Europe - Southwestern 1
71 BLAST SPOJ 1
72 Maximum Sum UVA 1
73 Roads SPOJ 1
74 Chocolate SPOJ 1
75 Pearls Live Archive 2002 Europe - Northwestern 1
76 0110SS SPOJ 1
77 Sereja and Suffixes Codeforces Codeforces Round #215 (Div. 2) 1
78 Let Me Count The Ways UVA 1
79 Drazil and Factorial Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 1
80 Prime Permutations CodeChef 1
81 History Grading UVA 1
82 Tiling Up Blocks Live Archive 2003 Asia - Kaohsiung 1
83 k-Tree Codeforces Codeforces Round #247 (Div. 2) 1
84 Vertex Cover SPOJ 1
85 Seinfeld SPOJ 1
86 Prime Path Live Archive 2006 Europe - Northwestern 1
87 Pocket Money SPOJ 1
88 COSTLY CHESS SPOJ 1
89 Before an Exam Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
90 Divisibility by Eight Codeforces Codeforces Round #306 (Div. 2) 1
91 Wachovia Bank SPOJ 1
92 Party Codeforces Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only) 1
93 Summing to a Square Prime SPOJ 1
94 SuperSale UVA 1
95 MAXIMUM WOOD CUTTER SPOJ 1
96 K-based Numbers. Version 2 Timus 1
97 Woodcutters Codeforces Codeforces Round #303 (Div. 2) 1
98 Alphacode Live Archive 2004 North America - East Central NA 1
99 DZY Loves Chessboard Codeforces Codeforces Round #254 (Div. 2) 1
100 Bee Walk SPOJ 1
101 Strategic Defense Initiative UVA 1
102 Two Substrings Codeforces Codeforces Round #306 (Div. 2) 1
103 Equal Sum Sets Live Archive 2013 Asia - Aizu 1
104 Rectangles Perimeter SPOJ 1
105 Training for final SPOJ 1
106 Ultra-Fast Mathematician Codeforces Codeforces Beta Round #57 (Div. 2) 1
107 Watermelon Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
108 Treats for the Cows SPOJ 1
109 Save Thy Toys SPOJ 1
110 Trip Planning Live Archive 2008 Asia - Taipei 1
111 Distinct Subsequences SPOJ 1
112 Assignments SPOJ 1
113 Exponentiation PKU 1
114 Mixtures SPOJ 1
115 Soft Drinking Codeforces Codeforces Round #107 (Div. 2) 1
116 Permutation Arrays UVA 1
117 Rent your airplane and make money SPOJ 1
118 Dollars UVA 1
119 Jill Rides Again UVA 1
120 Maximum Sum Timus 1
121 Princess Farida SPOJ 1
122 Tile Code Live Archive 2007 Asia - Seoul 1
123 Aliens at the train SPOJ 1
124 T-primes Codeforces Codeforces Round #142 (Div. 2) 1
125 XOR Maximization SPOJ 1
126 BerSU Ball Codeforces Codeforces Round #277.5 (Div. 2) 1
127 Unidirectional TSP UVA 1
128 Phidias SPOJ 1
129 Chop Ahoy! Revisited! SPOJ 1
130 Perfection UVA 1
131 Making Change TJU 1
132 Flipping Game Codeforces Codeforces Round #191 (Div. 2) 1
133 Bytelandian gold coins SPOJ 1
134 Homer Simpson UVA 1
135 Square Brackets SPOJ 1
136 Longest Common Subsequence UVA 1
137 K-based Numbers Timus 1
138 Divisibility UVA 1
139 Longest Run on a Snowboard UVA 1
140 Mashmokh and ACM Codeforces Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2) 1
141 Twin Primes UVA 1
142 Square Country Timus 1
143 Anton and Danik Codeforces Codeforces Round #379 (Div. 2) 1
144 Building Bridges SPOJ 1
145 Divisible Group Sums UVA 1
146 Generations of Tribbles Live Archive 2013 North America - Pacific Northwest 1
147 Prime Digital Roots Live Archive 2001 South Pacific 1
148 Largest Rectangle in a Histogram SPOJ 1
149 The jackpot UVA 1
150 Coins Game SPOJ 1
151 Getting in Line UVA 1
152 Feynman SPOJ 1
153 Simple Math A2 Online Judge 1
154 Trip SPOJ 1
155 Martian Mining SPOJ 1
156 DIE HARD SPOJ 1
157 Black or White SPOJ 1
158 Sum of Digits SPOJ 1
159 Cleaning Robot SPOJ 1
160 In Danger SPOJ 1
161 Fibonacci Words Live Archive 2012 World Finals - Warsaw 1
162 Alphacode SPOJ 1
163 A+B Problem PKU 1
164 Tiling a Grid With Dominoes SPOJ 1
165 Piggy-Bank SPOJ 1
166 Binary Apple Tree Timus 1
167 Robot Instructions UVA 1
168 Ingenuous Cubrency UVA 1
169 Magic Grid SPOJ 1
170 Number of Ways Codeforces Codeforces Round #266 (Div. 2) 1
171 Compromise UVA 1
172 Binary Search Tree Live Archive 2010 Asia - Daejeon 1
173 Cormen --- The Best Friend Of a Man Codeforces Codeforces Round #377 (Div. 2) 1
174 Help the soldier SPOJ 1
175 Metro Timus 1
176 Sweet and Sour Rock SPOJ 1
177 Non-Decreasing Digits SPOJ 1
178 Fence Codeforces Codeforces Round #211 (Div. 2) 1
179 Cheap Travel Codeforces Codeforces Round #266 (Div. 2) 1
180 The Great Ball SPOJ 1
181 Is Bigger Smarter? UVA 1
182 Buying Apples! SPOJ 1
183 I Can Guess the Data Structure! UVA 1
184 To the Max PKU 1
185 Chat room Codeforces Codeforces Beta Round #54 (Div. 2) 1
186 Joysticks Codeforces Codeforces Round #345 (Div. 2) 1
187 Philosophers Stone SPOJ 1
188 No Change SPOJ 1
189 The 3n + 1 problem UVA 1
190 The Knapsack Problem SPOJ 1
191 Forming Quiz Teams UVA 1
192 Tiling a Grid With Dominoes Live Archive 2007 North America - Greater NY 1
193 Adjacent Bit Counts SPOJ 1
194 Flags Timus 1
195 Coin Change UVA 1
196 Histogram SPOJ 1
197 Grandpa's Walk Live Archive 2012 Asia - Jakarta 1
198 ShorterSuperSum TopCoder SRM 467 - Div2 easy] () 1
199 Tetrahedron Codeforces Codeforces Round #113 (Div. 2) 1
200 Collecting Beepers UVA 1
201 DNA Sequences SPOJ 1
202 Kefa and First Steps Codeforces Codeforces Round #321 (Div. 2) 1
203 Kuriyama Mirai's Stones Codeforces Codeforces Round #248 (Div. 2) 1
204 Permutations SPOJ 1
205 Activities SPOJ 1
206 Blueberries SPOJ 1
207 Dancing Cows SPOJ 2
208 Tennis Championship Codeforces Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1) 2
209 Bing it Live Archive 2009 Asia - Harbin 2
210 String to Palindrome UVA 2
211 Feline Olympics - Mouseball SPOJ 2
212 Jugs UVA 2
213 Con-Junctions SPOJ 2
214 Counting binary strings SPOJ 2
215 Another Longest Increasing Subsequence Problem SPOJ 2
216 Counting The Way of Bracket Replacement SPOJ 2
217 Musketeers SPOJ 2
218 Little Elephant and Painting CodeChef 2
219 Nested Dolls SPOJ 2
220 Painting the balls SGU 2
221 Counting K-Rectangle SPOJ 2
222 Always on the run UVA 2
223 Fibonacci System Live Archive 2008 Europe - Northeastern 2
224 Kyoya and Colored Balls Codeforces Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 2
225 Covered Path Codeforces Codeforces Round #298 (Div. 2) 2
226 Up Subsequence SPOJ 2
227 String Partition UVA 2
228 KTV UVA 2
229 Unnatural Conditions Codeforces AIM Tech Round 5 (rated, Div. 1 + Div. 2) 2
230 Diving for Gold UVA 2
231 Soldier and Number Game Codeforces Codeforces Round #304 (Div. 2) 2
232 Erdos Numbers Live Archive 2000 Europe - Northwestern & Europe - Southwestern & Europe - Mid-Central 2
233 Inna and Choose Options Codeforces Codeforces Round #234 (Div. 2) 2
234 Wooden Sticks SPOJ 2
235 Card Sorting SPOJ 2
236 Interesting number SPOJ 2
237 BATMAN2 SPOJ 2
238 Bicolored Horses Timus 2
239 Mosaic Live Archive 2009 North America - Southeast USA 2
240 Weights and Measures UVA 2
241 Game of Sum UVA 2
242 Functions again Codeforces Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2) 2
243 Menu SPOJ 2
244 Dab of Backpack SPOJ 2
245 Squares UVA 2
246 Another Box Problem SPOJ 2
247 Make Palindrome UVA 2
248 Queue UVA 2
249 Shopping Live Archive 2014 Asia - Tokyo 2
250 Tourist SPOJ 2
251 Pebble Solitaire UVA 2
252 Boxes UVA 2
253 Square UVA 2
254 Nudnik Photographer Timus 2
255 Chop Ahoy! Revisited! Live Archive 2005 Africa/Middle East - Arab and North Africa 2
256 Pebbles Live Archive 2007 North America - Pacific Northwest & North America - Southern California 2
257 Another Problem on Strings Codeforces Codeforces Round #112 (Div. 2) 2
258 Maximum Sub-sequence Product UVA 2
259 Decoding Morse Sequences SPOJ 2
260 LUCIFER Number SPOJ 2
261 NERED SPOJ 2
262 Deliver pizza SPOJ 2
263 Again Palindrome UVA 2
264 Color the Fence Codeforces Codeforces Round #202 (Div. 2) 2
265 Reposts Codeforces VK Cup 2015 - Qualification Round 1 2
266 Ferry Loading UVA 2
267 New Year and Domino Codeforces Good Bye 2015 2
268 Walking on the Safe Side UVA 2
269 Land Acquisition SPOJ 2
270 Ice Sculptures Codeforces VK Cup 2012 Qualification Round 1 2
271 Railway Tickets Timus 2
272 Murcia's Skyline UVA 2
273 Particular Palindromes SPOJ 2
274 Pay the Price UVA 2
275 Street SPOJ 2
276 False Mirrors Timus 2
277 Making A Budget SPOJ 2
278 Handball UVA 2
279 Threeprime Numbers Timus 2
280 Dice SPOJ 2
281 Concert Tour Live Archive 2014 Asia - Bangkok 2
282 Fibo A2 Online Judge 2
283 Slurpys UVA 2
284 Mr. Kitayuta's Colorful Graph Codeforces Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) 2
285 Triangular N-Queens Problem Live Archive 2006 North America - Greater NY 2
286 Balancing the Stone SPOJ 2
287 Segments Timus 2
288 Approximating a Constant Range Codeforces Codeforces Round #333 (Div. 2) 2
289 Space Elevator PKU 2
290 Modulo Sum Codeforces Codeforces Round #319 (Div. 2) 2
291 Brackets Sequence Timus 2
292 The Courier SPOJ 2
293 G-One Numbers SPOJ 2
294 String Distance and Transform Process UVA 2
295 Photo to Remember Codeforces VK Cup 2015 - Qualification Round 1 2
296 Pride Codeforces Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) 2
297 Quadratic Equation SPOJ 2
298 Geometric Progression Codeforces Codeforces Round #Pi (Div. 2) 2
299 JEDNAKOST SPOJ 2
300 I-Keyboard SPOJ 2
301 Marks Distribution UVA 2
302 Optimal Binary Search Tree UVA 2
303 Ministry Timus 2
304 String Computer UVA 2
305 Temptation Island SPOJ 2
306 BATMAN1 SPOJ 2
307 Simple Minded Hashing UVA 2
308 Sum of Different Primes UVA 2
309 Partition SPOJ 2
310 String Shuffle SPOJ 2
311 Longest Match UVA 2
312 Password Codeforces Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) 2
313 Mr. Kitayuta's Gift Codeforces Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) 2
314 A DP Problem Live Archive 2003 Asia - Tehran 2
315 Motoboy URI 2
316 DZY Loves Sequences Codeforces Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2) 2
317 Distinct Subsequences UVA 2
318 Sequence Live Archive 2014 Asia - Kuala Lumpur 2
319 Rain SPOJ 2
320 Tight Words UVA 2
321 Sorting is not easy SPOJ 2
322 Alternative Thinking Codeforces Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2) 2
323 Journey Codeforces Codeforces Round #428 (Div. 2) 2
324 Black-White Grid Live Archive 2006 Asia - Hanoi 2
325 Ra-One Numbers SPOJ 2
326 Drop the Triples Live Archive 2007 Latin America - South America 2
327 Timofey and a tree Codeforces Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2) 2
328 Polo the Penguin and Strings Codeforces Codeforces Round #177 (Div. 1) & Codeforces Round #177 (Div. 2) 2
329 Catch Fish SPOJ 2
330 Cow Frisbee Team TJU 2
331 Maximum sum on a torus UVA 2
332 Game Show Math UVA 2
333 Chest of Drawers UVA 2
334 Yoda Goes Palindromic ! SPOJ 2
335 The Marriage Interview :-) UVA 2
336 Beautiful People SGU 2
337 1807 SPOJ 2
338 String problem SPOJ 2
339 Esferas SPOJ 2
340 Caesar's Legions Codeforces Codeforces Beta Round #89 (Div. 2) 2
341 Trouble of 13-Dots UVA 2
342 Making Change UVA 2
343 Another Tree Problem SPOJ 2
344 Mobile Service SPOJ 2
345 George and Job Codeforces Codeforces Round #267 (Div. 2) 2
346 Travelling Salesman UVA 2
347 Bar Codes UVA 2
348 Tower of Cubes UVA 2
349 Vasya and String Codeforces Codeforces Round #354 (Div. 2) 2
350 Polo the Penguin and Matrix Codeforces Codeforces Round #177 (Div. 2) 2
351 Tiling UVA 2
352 Problem 3 SPOJ 2
353 Chain Reaction Codeforces Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) 2
354 Game of Credit Cards Codeforces Codeforces Round #401 (Div. 2) 2
355 Sinking Ship Codeforces Codeforces Beta Round #59 (Div. 2) 2
356 Point Connection Game in a Circle SPOJ 2
357 Flight Planner UVA 2
358 Anniversary Party Timus 2
359 Leaves SPOJ 2
360 Bit Mask UVA 2
361 Restoring Password Codeforces Codeforces Beta Round #76 (Div. 2 Only) 2
362 Destruction Cannon URI 2
363 Hard problem Codeforces Codeforces Round #367 (Div. 2) 2
364 Three-coloring of binary trees SPOJ 2
365 Chopsticks UVA 2
366 BATMAN3 SPOJ 2
367 The least round way Codeforces Codeforces Beta Round #2 3
368 Car with powers SPOJ 3
369 Little Elephant and Interval Codeforces Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2) 3
370 Common Subsequences SPOJ 3
371 Candy (Again) SPOJ 3
372 Walking Around Wisely UVA 3
373 Longtail Hedgehog Codeforces Codeforces Round #338 (Div. 2) 3
374 Slikar SPOJ 3
375 Hierarchy Timus 3
376 Bear and Compressing Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 3
377 Working out Codeforces Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) 3
378 Booking System Codeforces Codeforces Round #241 (Div. 2) 3
379 Free Candies UVA 3
380 Mike and gcd problem Codeforces Codeforces Round #410 (Div. 2) 3
381 Zuma Codeforces Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) 3
382 Permutation Codeforces Codeforces Round #209 (Div. 2) 3
383 Good Sequences Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 3
384 Determine it UVA 3
385 Cards, bags and coins CodeChef 3
386 Simple Strings Codeforces Educational Codeforces Round 12 3
387 To Add or Not to Add Codeforces Codeforces Round #143 (Div. 2) 3
388 Partition the sequence SPOJ 3
389 Bribe the Prisoners SPOJ 3
390 Polygon SPOJ 3
391 Plug-in Codeforces Yandex.Algorithm Open 2011 Qualification 1 3
392 Kefa and Dishes Codeforces Codeforces Round #321 (Div. 2) 3
393 Omar Loves Candies A2 Online Judge 3
394 Save the problem! Codeforces MemSQL Start[c]UP 3.0 - Round 2 (onsite finalists) 3
395 Orchard Trees UVA 3
396 Mysterious Present Codeforces Codeforces Beta Round #4 (Div. 2 Only) 3
397 Color Stripe Codeforces Codeforces Round #135 (Div. 2) 3
398 Beautiful Numbers UVA 3
399 Mike and Feet Codeforces Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2) 3
400 Greenhouse Effect Codeforces Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2) 3
401 Journey Codeforces Codeforces Round #374 (Div. 2) 3
402 RGBStreet TopCoder SRM 325 - Div2 medium] () 3
403 Little Red Riding Hood UVA 3
404 Ilya and Escalator Codeforces Codeforces Round #293 (Div. 2) 3
405 Count Paths A2 Online Judge 3
406 Long Path Codeforces Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) 3
407 Physics Practical Codeforces Codeforces Round #154 (Div. 2) 3
408 BadNeighbors TopCoder TCCC '04 Round 4 - Div1 easy] (5009) 3
409 Minus Operation SPOJ 3
410 Zeta-Nim Game CodeChef 3
411 Little Girl and Maximum XOR Codeforces Codeforces Round #169 (Div. 2) 3
412 Triangles Live Archive 2014 South Pacific 3
413 Sagheer, the Hausmeister Codeforces Codeforces Round #417 (Div. 2) 3
414 String Popping UVA 3
415 Barcode Codeforces Codeforces Round #139 (Div. 2) 3
416 ACM (ACronym Maker) Live Archive 2005 North America - East Central NA 3
417 Crime Wave - The Sequel UVA 3
418 Mr. Kitayuta, the Treasure Hunter Codeforces Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) 3
419 Recycling Bottles Codeforces Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2) 3
420 Budget Travel UVA 3
421 Even Palindrome SPOJ 3
422 Building Bridges(HARD) SPOJ 3
423 Ada and Game SPOJ 3
424 Tour UVA 3
425 An impassioned circulation of affection Codeforces Codeforces Round #418 (Div. 2) 3
426 How Many O's? UVA 3
427 Palindromic Subsequence UVA 3
428 Minimal Coverage Timus 3
429 Gargari and Permutations Codeforces Codeforces Round #264 (Div. 2) 3
430 Many polygons SPOJ 3
431 Longest Regular Bracket Sequence Codeforces Codeforces Beta Round #5 3
432 IOI07 Miners SPOJ 3
433 Scheduling Lectures UVA 3
434 New Skateboard Codeforces Educational Codeforces Round 8 3
435 Many Paths, One Destination UVA 3
436 Best Coalitions UVA 3
437 Little Elephant and Movies CodeChef 3
438 Gentlemen Timus 3
439 Alyona and Spreadsheet Codeforces Codeforces Round #401 (Div. 2) 3
440 Petya and Java Codeforces Codeforces Beta Round #61 (Div. 2) 3
441 End up with More Teams UVA 3
442 Hard Process Codeforces Educational Codeforces Round 11 3
443 Paid Roads SPOJ 3
444 Intervals of Monotonicity Timus 3
445 Help Bob SPOJ 3
446 Most Servings Meal SPOJ 3
447 Writing Code Codeforces Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) 3
448 Cards Codeforces 8VC Venture Cup 2016 - Elimination Round 3
449 Robbers' watch Codeforces Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) 3
450 The Vindictive Coach UVA 3
451 Fast Food UVA 3
452 Coloring Trees Codeforces Codeforces Round #369 (Div. 2) 3
453 The Secret of an Aerolite SPOJ 3
454 Sum of Digits Timus 3
455 Maximum Absurdity Codeforces Codeforces Round #193 (Div. 2) 3
456 Distance in Tree Codeforces VK Cup 2012 Round 1 3
457 COUNT PAREN SPOJ 3
458 Pleasing Chief CodeChef 3
459 Maximum Triangle Area SPOJ 3
460 Hopeless Coach TJU 3
461 Choosing Capital for Treeland Codeforces Codeforces Round #135 (Div. 2) 3
462 Fewest Flops UVA 3
463 Vanya and Scales Codeforces Codeforces Round #308 (Div. 2) 3
464 Xenia and Weights Codeforces Codeforces Round #197 (Div. 2) 3
465 Shopping Trip UVA 3
466 Mahmoud and a Message Codeforces Codeforces Round #396 (Div. 2) 3
467 A and B and Interesting Substrings Codeforces Codeforces Round #294 (Div. 2) 3
468 Alyona and the Tree Codeforces Codeforces Round #358 (Div. 2) 3
469 Bear and Prime Numbers Codeforces Codeforces Round #226 (Div. 2) 3
470 Sereja and Game CodeChef 3
471 I-Keyboard Live Archive 2000 Europe - Central 3
472 Bear and Blocks Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 3
473 Ladder Codeforces Codeforces Round #171 (Div. 2) 3
474 ZigZag TopCoder TCCC '03 Semifinals 3 - Div1 easy] (4493) 3
475 Sense of Beauty Timus 3
476 Internet Address Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 3
477 The Debut Album Timus 3
478 AGTC UVA 3
479 Dynamic LCA SPOJ 3
480 Greg and Graph Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 3
481 Mnemonics and Palindromes Timus 3
482 Make Psycho SPOJ 3
483 Greedy Hydra SPOJ 3
484 The Matrix Game CodeChef 3
485 Traveling by Stagecoach SPOJ 3
486 Lazy Math Instructor Live Archive 2000 Asia - Tehran 3
487 Painting Fence Codeforces Codeforces Round #256 (Div. 2) 3
488 Bubble Sort Graph Codeforces Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) 3
489 FOODIE SPOJ 3
490 Raucous Rockers UVA 3
491 Term Strategy UVA 3
492 Hippity Hopscotch UVA 3
493 Art Union Codeforces Codeforces Round #241 (Div. 2) 3
494 Hackers' Crackdown UVA 3
495 Re-Arrange II SPOJ 3
496 Fetching Cooking Tools CodeChef 3
497 Arpa's weak amphitheater and Mehrdad's valuable Hoses Codeforces Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2) 3
498 Combo Deal UVA 3
499 String reduction SPOJ 3
500 Probablistic OR SPOJ 3
501 XOR Equation Codeforces 8VC Venture Cup 2016 - Final Round 4
502 Hometask Codeforces Codeforces Round #131 (Div. 2) 4
503 Gasoline Station Timus 4
504 Expect the Expected UVA 4
505 Red-Green Towers Codeforces Codeforces Round #273 (Div. 2) 4
506 Fire Again Codeforces Codeforces Beta Round #35 (Div. 2) 4
507 The Bridges of Kolsberg UVA 4
508 Pashmak and Graph Codeforces Codeforces Round #261 (Div. 2) 4
509 Bright Bracelet Live Archive 2003 North America - Mid-Central USA 4
510 Zero Tree Codeforces Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2) 4
511 Buns Codeforces Codeforces Beta Round #82 (Div. 2) 4
512 Classmates 2 Timus 4
513 Little Pony and Harmony Chest Codeforces Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) 4
514 Babaei and Birthday Cake Codeforces Codeforces Round #343 (Div. 2) 4
515 Round Table Knights Codeforces Codeforces Beta Round #65 (Div. 2) 4
516 Malevich Strikes Back! Timus 4
517 A Lot of Games Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 4
518 Office Keys Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals) 4
519 Cookies Codeforces Codeforces Beta Round #64 4
520 Can U Win? UVA 4
521 Boy Scouts SPOJ 4
522 Chilly Willy Codeforces Codeforces Round #152 (Div. 2) 4
523 Reberland Linguistics Codeforces Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) 4
524 Pie Rules Codeforces MemSQL Start[c]UP 3.0 - Round 1 4
525 Expression Again UVA 4
526 Dominoes SPOJ 4
527 Weather Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) 4
528 SMS Timus 4
529 Magic, Wizardry and Wonders Codeforces Codeforces Round #143 (Div. 2) 4
530 Image Preview Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 4
531 Eternal Victory Codeforces Codeforces Beta Round #57 (Div. 2) 4
532 INVITATION FOR TECHOFES SPOJ 4
533 Zeros and Ones UVA 4
534 Bag of mice Codeforces Codeforces Round #105 (Div. 2) 4
535 Fools and Roads Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 4
536 Dima and Salad Codeforces Codeforces Round #214 (Div. 2) 4
537 Matches UVA 4
538 Rent your airplane and make money Live Archive 2003 Europe - Southwestern 4
539 Connecting Universities Codeforces Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2) 4
540 Shaass and Bookshelf Codeforces Codeforces Round #178 (Div. 2) 4
541 Python Indentation Codeforces Codeforces Round #455 (Div. 2) 4
542 Forming Teams Codeforces Codeforces Round #133 (Div. 2) 4
543 Cái túi ( Hard version ) SPOJ Vietnam 4
544 Hometask Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 4
545 Chocolate SPOJ 4
546 BATMAN4 SPOJ 4
547 Palindrome pairs Codeforces VK Cup 2012 Qualification Round 2 4
548 Letter Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 4
549 Convex Polygons SPOJ 4
550 Another Assignment Problem SPOJ 4
551 Avoiding Jungle in the Dark UVA 4
552 Vladik and Memorable Trip Codeforces Codeforces Round #416 (Div. 2) 4
553 Ingredients SPOJ 4
554 Crack Timus 4
555 Digit Sum UVA 4
556 Book of Evil Codeforces Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) 4
557 Clique Problem Codeforces Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) 4
558 Chloe and pleasant prizes Codeforces Codeforces Round #384 (Div. 2) 4
559 Enemy is weak Codeforces Codeforces Beta Round #57 (Div. 2) 4
560 ICPC Team Strategy UVA 4
561 Bit by Bit SPOJ 4
562 Little Elephant and Blocks CodeChef 4
563 Civilization Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 4
564 DIVSEQ SPOJ 4
565 Drazil and Tiles Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 4
566 Namit In Trouble SPOJ 4
567 Lemon Tale Timus 4
568 Arthur and Table Codeforces Codeforces Round #311 (Div. 2) 4
569 New Year and Fireworks Codeforces Good Bye 2016 4
570 Divide and conquer CodeChef 4
571 Party A2 Online Judge 4
572 Generate a String Codeforces Educational Codeforces Round 16 4
573 Matchsticks TJU 4
574 Cow Program Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 4
575 Message Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 4
576 Dumb Bones UVA 4
577 Drop the Triples SPOJ 4
578 Mars Canals Timus 4
579 Fortune Telling Codeforces Codeforces Beta Round #55 (Div. 2) 4
580 Philip J. Fry Problem UVA 4
581 Chocolate Box UVA 4
582 Balanced Numbers SPOJ 4
583 Tiling Dominoes UVA 4
584 Communication Fiend Timus 4
585 Assignments Live Archive 2010 Asia - Harbin 4
586 Antimatter Ray Clearcutting UVA 4
587 Folding Timus 4
588 Number of Paths in the Empire SGU 4
589 Almost Arithmetical Progression Codeforces Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) 4
590 Account Book UVA 4
591 Jeff and Rounding Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 4
592 Prefixes and Suffixes Codeforces Codeforces Round #246 (Div. 2) 4
593 Queries for Number of Palindromes Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 4
594 Fire Codeforces Codeforces Round #436 (Div. 2) 4
595 XOR-pyramid Codeforces Codeforces Round #483 (Div. 1) [Thanks, Botan Investments and Victor Shaburov!] & Codeforces Round #483 (Div. 2) [Thanks, Botan Investments and Victor Shaburov!] 4
596 Antimonotonicity UVA 4
597 Free Parentheses UVA 4
598 Batman UVA 4
599 Fox And Jumping Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 4
600 Who is The Boss SPOJ 4
601 Binary Search Live Archive 2000 Europe - Northeastern 4
602 Once Again... Codeforces Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2) 4
603 Going Postal Live Archive 2014 South Pacific 4
604 Najkraci SPOJ 4
605 The Values You Can Make Codeforces Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2) 4
606 Let go to the movies SPOJ 4
607 Busy Programmer UVA 4
608 The Intriguing Obsession Codeforces Codeforces Round #439 (Div. 2) 4
609 Fatawy SPOJ 4
610 Bad Luck Island Codeforces Codeforces Round #301 (Div. 2) 4
611 A and B and Lecture Rooms Codeforces Codeforces Round #294 (Div. 2) 4
612 Bridge Building UVA 4
613 One-two, One-two 2 Timus 4
614 Minion Circle CodeChef 4
615 Lov-e Pap Pap-e Polti SPOJ 4
616 Maximum Submatrix 2 Codeforces Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2) 4
617 Riding in a Lift Codeforces Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1) 4
618 Gerald and Giant Chess Codeforces Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2) 4
619 Appleman and Tree Codeforces Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) 4
620 The Child and Zoo Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 4
621 Bottle Taps Timus 4
622 Trees Again SPOJ 4
623 Fibonacci Words UVA 5
624 Sum Codeforces Codeforces Beta Round #46 (Div. 2) 5
625 An overnight dance in discotheque Codeforces Codeforces Round #418 (Div. 2) 5
626 JUMPING DORA SPOJ 5
627 Optimal Cut UVA 5
628 Two Paths Codeforces Codeforces Beta Round #14 (Div. 2) 5
629 Counting Rectangles is Fun Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 5
630 Substring and Subsequence Codeforces VK Cup 2012 Round 2 5
631 Count Digits CodeChef 5
632 The Great Julya Calendar Codeforces ABBYY Cup 3.0 - Finals (online version) 5
633 Games with Rectangle Codeforces Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) 5
634 Sums of Digits Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 5
635 Bear and Tower of Cubes Codeforces Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) 5
636 Connected Components Codeforces Croc Champ 2013 - Round 1 5
637 A Simple Task Codeforces Codeforces Beta Round #11 5
638 IPL - CRICKET TOURNAMENT SPOJ 5
639 Inversions problem Codeforces Rockethon 2015 5
640 Longest Increasing Sequence UVA 5
641 Connect Line Segments SPOJ 5
642 Patches URI 5
643 Petr# Codeforces Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) 5
644 Ciel and Duel Codeforces Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) 5
645 Spiders Codeforces School Regional Team Contest, Saratov, 2011 5
646 Allergy Test UVA 5
647 Dynasty Puzzles Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 5
648 Kalila and Dimna in the Logging Industry Codeforces Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) 5
649 HexagonalBattlefield TopCoder SRM 449 - Div1 medium] () 5
650 DNA Laboratory SPOJ 5
651 Anniversary Firework Timus 5
652 K-based Numbers. Version 3 Timus 5
653 Running Track Codeforces Codeforces Round #338 (Div. 2) 5
654 Restaurant Codeforces Testing Round #12 5
655 Pillars Codeforces Codeforces Round #271 (Div. 2) 5
656 Sereja and Bubble Sort CodeChef 5
657 Lucky Common Subsequence Codeforces Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2) 5
658 WordMath TopCoder Unknown () 5
659 Covering Sets CodeChef 5
660 Logo Turtle Codeforces Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) 5
661 Basketball Team Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 5
662 Bargaining Table Codeforces Codeforces Beta Round #22 (Div. 2 Only) 5
663 Subsequence Problem SPOJ 5
664 Running with Obstacles Codeforces VK Cup 2016 - Qualification Round 1 5
665 Sequence Codeforces Codeforces Beta Round #13 5
666 Roman and Numbers Codeforces Codeforces Round #235 (Div. 2) 5
667 Super M Codeforces Codeforces Round #328 (Div. 2) 5
668 Levko and Array Codeforces Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) 5
669 Choosing Balls Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 5
670 Clique in the Divisibility Graph Codeforces VK Cup 2015 - Finals, online mirror 5
671 Strip Codeforces Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) 5
672 The Unreal Tournament UVA 5
673 Clear Symmetry Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 5
674 How many trees? Codeforces Codeforces Beta Round #9 (Div. 2 Only) 5
675 Independent Attacking Zones UVA 5
676 Alyona and Strings Codeforces Codeforces Round #358 (Div. 2) 5
677 The Bakery Codeforces Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2) 5
678 Obsessive String Codeforces Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2) 5
679 Inna and Dima Codeforces Codeforces Round #220 (Div. 2) 5
680 Minimization Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) 5
681 Compatible Numbers Codeforces Codeforces Round #112 (Div. 2) 5
682 Porcelain Codeforces Codeforces Round #105 (Div. 2) 5
683 Candy UVA 5
684 Weak Links UVA 5
685 Summing Slopes CodeChef 5
686 Lucky Tree Codeforces Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) 5
687 Iahub and Permutations Codeforces Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) 5
688 Elimination Codeforces RCC 2014 Warmup (Div. 2) 5
689 Happiness to People! Timus 5
690 CreatureTraining TopCoder TCO08 Round 2 - Div1 medium] () 5
691 Upgrading Array Codeforces Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) 5
692 Square Subsets Codeforces Codeforces Round #448 (Div. 2) 5
693 Coin Changing Again UVA 5
694 Roadworks Timus 5
695 Increase Sequence Codeforces Codeforces Round #266 (Div. 2) 5
696 E-mail Timus 5
697 Atomic Car Race UVA 5
698 Hotel Live Archive 2005 Asia - Tehran 5
699 Chocolate Bar Codeforces Educational Codeforces Round 1 5
700 Breaking Good Codeforces Codeforces Round #287 (Div. 2) 5
701 Huffman´s Greed SPOJ 5
702 Antimatter Codeforces Codeforces Round #225 (Div. 1) 5
703 Winter is here Codeforces Codeforces Round #428 (Div. 2) 5
704 Ship Routes Timus 5
705 Enterprise Timus 5
706 Robot Rapping Results Report Codeforces CROC 2016 - Elimination Round 5
707 Hanoi Factory Codeforces Codeforces Round #401 (Div. 2) 5
708 Testing the CATCHER Live Archive 1994 World Finals - Phoenix 5
709 GO FOR DIAMONDS SPOJ 5
710 Vasya and Beautiful Arrays Codeforces Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) 5
711 Train Timus 5
712 The Islands UVA 5
713 Symmetric and Transitive Codeforces Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2) 5
714 Checkout Assistant Codeforces Codeforces Beta Round #19 5
715 Cargo Agency Timus 5
716 Paint the Tree CodeChef 5
717 Promotion URI 5
718 Famil Door and Brackets Codeforces Codeforces Round #343 (Div. 2) 5
719 Correcting Mistakes Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 5
720 Spy Syndrome 2 Codeforces Manthan, Codefest 16 5
721 Wet Shark and Blocks Codeforces Codeforces Round #341 (Div. 2) 5
722 Berzerk Codeforces Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2) 5
723 Dima and Hares Codeforces Codeforces Round #208 (Div. 2) 5
724 Mario Kart A2 Online Judge 5
725 Valid Sets Codeforces Codeforces Round #277 (Div. 2) 5
726 Jeff and Furik Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 5
727 Number With The Given Amount Of Divisors Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 5
728 Anya and Cubes Codeforces Codeforces Round #297 (Div. 2) 6
729 Greg and Friends Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 6
730 Fish Codeforces Codeforces Beta Round #16 (Div. 2 Only) 6
731 Beaver Codeforces Codeforces Beta Round #71 6
732 Maximum Sub-sequence Product Live Archive 1996 Europe - Southeastern 6
733 Road Improvement Codeforces Codeforces Round #302 (Div. 1) 6
734 Common Palindrome UVA 6
735 Minesweeper 1D Codeforces Codeforces Round #237 (Div. 2) 6
736 New Year Domino Codeforces Good Bye 2014 6
737 Vladik and cards Codeforces Codeforces Round #384 (Div. 2) 6
738 Lucky Subsequence Codeforces Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) 6
739 Wonderful Randomized Sum Codeforces Codeforces Beta Round #33 (Codeforces format) 6
740 Special Matrices Codeforces Codeforces Round #277.5 (Div. 2) 6
741 Least Common Multiple Live Archive 2014 South Pacific 6
742 Maxim and Restaurant Codeforces Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) 6
743 Stripe 2 Codeforces Codeforces Alpha Round #21 (Codeforces format) 6
744 Karen and Supermarket Codeforces Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) 6
745 Looking for Order Codeforces Codeforces Beta Round #8 6
746 Snakes A2 Online Judge 6
747 Jzzhu and Numbers Codeforces Codeforces Round #257 (Div. 1) 6
748 Dynamic Problem Scoring Codeforces VK Cup 2017 - Round 3 6
749 Decoding Genome Codeforces Codeforces Round #137 (Div. 2) 6
750 Alternative Solution Timus 6
751 Sort that Queue Live Archive 2005 Africa/Middle East - Arab and North Africa 6
752 Array GCD Codeforces AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2) 6
753 Pluses everywhere Codeforces Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1) 6
754 EKG Codeforces ABBYY Cup 3.0 6
755 Paint templates SPOJ 6
756 Wizards and Huge Prize Codeforces Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2) 6
757 Okabe and El Psy Kongroo Codeforces Codeforces Round #420 (Div. 2) 6
758 Plants vs. Zombies HD SP UVA 6
759 LIS of Sequence Codeforces Codeforces Round #277 (Div. 2) 6
760 Substitutes in Number Codeforces Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2) 6
761 Palindrome Codeforces MemSQL start[c]up Round 2 - online version 6
762 ACM Diagnostics Timus 6
763 Decimation Timus 6
764 Permutation Sum Codeforces Codeforces Round #175 (Div. 2) 6
765 Train Codeforces Codeforces Beta Round #68 6
766 Phone Talks Codeforces VK Cup 2012 Qualification Round 1 6
767 Jill Rides Again Live Archive 1997 World Finals - San Jose 6
768 Trains and Statistic Codeforces Codeforces Round #353 (Div. 2) 6
769 Mahmoud and a xor trip Codeforces Codeforces Round #396 (Div. 2) 6
770 Segment Tree SPOJ 6
771 Array Queries Codeforces Educational Codeforces Round 19 6
772 Animals Codeforces Codeforces Beta Round #35 (Div. 2) 6
773 Watching Fireworks is Fun Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 6
774 Pig and Palindromes Codeforces Codeforces Round #316 (Div. 2) 6
775 Partial Teacher Codeforces Manthan 2011 6
776 Sonya and Problem Wihtout a Legend Codeforces Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2) 6
777 Martian Army Timus 6
778 Salary for Robots Timus 6
779 MagicNaming TopCoder SRM 526.5 - Div2 hard] () 6
780 Yet Another Number Game Codeforces Codeforces Round #173 (Div. 2) 6
781 Little Elephant and Elections Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 6
782 Unusual Sequences Codeforces Codeforces Round #450 (Div. 2) 6
783 Beautiful numbers Codeforces Codeforces Beta Round #51 6
784 Incrementing The Integer SPOJ 6
785 Fence Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 6
786 Demogorgon URI 6
787 Buses Codeforces Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) 6
788 Table Compression Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 6
789 The Top-Code SPOJ 6
790 Hamiltonian Spanning Tree Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 6
791 Longest Common Subsequence SPOJ 6
792 Subsequences Codeforces Testing Round #12 6
793 Ilya and Roads Codeforces Codeforces Round #186 (Div. 2) 6
794 Solitaire Codeforces Codeforces Round #130 (Div. 2) 6
795 Interesting Game Codeforces Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only) 6
796 Dreamoon and Strings Codeforces Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) 6
797 Memory and Scores Codeforces Codeforces Round #370 (Div. 2) 6
798 Game --- Mouse and Cheese UVA 6
799 Random Task Codeforces Codeforces Round #247 (Div. 2) 6
800 The Maths Lecture Codeforces Codeforces Round #287 (Div. 2) 6
801 Numbers Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
802 Save the Python Programmers! Live Archive 2010 North America - Pacific Northwest 6
803 File List Codeforces VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) 6
804 Brainwashing Device Timus 6
805 Fedor and Essay Codeforces Codeforces Round #267 (Div. 2) 6
806 Two Strings Codeforces Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2) 6
807 Table Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 6
808 Shooting Gallery Codeforces Codeforces Beta Round #30 (Codeforces format) 6
809 Let's Go Rolling! Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 6
810 Mystic Craft SPOJ 6
811 Two out of Three Codeforces Yandex.Algorithm 2011 Qualification 2 6
812 Lizards and Basements 2 Codeforces Codeforces Beta Round #6 (Div. 2 Only) 6
813 Magic Numbers Codeforces Educational Codeforces Round 8 6
814 Work Group Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 6
815 Let's Play Osu! Codeforces Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2) 6
816 Sereja and Subsequences Codeforces Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2) 6
817 Leha and another game about graph Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 6
818 Police Station Codeforces Codeforces Round #130 (Div. 2) 6
819 Cinema Cashier Codeforces Codeforces Beta Round #10 6
820 Duff in Beach Codeforces Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2) 6
821 Coloring Brackets Codeforces Codeforces Round #106 (Div. 2) 6
822 Summing Slopes SPOJ 6
823 Eleven UVA 6
824 Kindergarten Codeforces Codeforces Round #276 (Div. 1) 6
825 Demiurges Play Again Codeforces Codeforces Round #300 6
826 Palindromes Codeforces Codeforces Beta Round #98 (Div. 2) 6
827 Towers Codeforces Codeforces Round #142 (Div. 1) 6
828 Oil Skimming A2 Online Judge 6
829 Group Projects Codeforces 8VC Venture Cup 2016 - Elimination Round 6
830 ???? ?? ?????? - 2 (round version) Codeforces VK Cup 2015 - Round 1 6
831 Cunning Gena Codeforces RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) 6
832 Relay Race Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
833 AlgoRace Codeforces Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2) 6
834 Beaver Game Codeforces Codeforces Beta Round #70 (Div. 2) 6
835 Ciel and Gondolas Codeforces Codeforces Round #190 (Div. 1) 6
836 New Year Letter Codeforces Good Bye 2013 6
837 Insertion Sort Codeforces Codeforces Round #212 (Div. 2) 6
838 Money for Nothing Live Archive 2017 World Finals - Rapid City 6
839 Cipher Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 6
840 Little Elephant and LCM Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 6
841 Eating High Timus 6
842 Vanya and Brackets Codeforces Codeforces Round #308 (Div. 2) 6
843 Match & Catch Codeforces Codeforces Round #244 (Div. 2) 6
844 Arthur and Brackets Codeforces Codeforces Round #288 (Div. 2) 6
845 LCIS Codeforces Codeforces Beta Round #10 6
846 Bracket Sequence SPOJ 6
847 Anfisa the Monkey Codeforces School Team Contest #2 (Winter Computer School 2010/11) 6
848 Devu and Birthday Celebration Codeforces Codeforces Round #251 (Div. 2) 7
849 Game with Powers Codeforces Codeforces Round #188 (Div. 1) 7
850 Painting The Wall Codeforces Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2) 7
851 Colored Tiles UVA 7
852 Lucky Country Codeforces Codeforces Beta Round #77 (Div. 1 Only) 7
853 Pictures with Kittens (hard version) Codeforces Codeforces Round #521 (Div. 3) 7
854 Join Timus 7
855 Cats Transport Codeforces Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) 7
856 Intellectual Inquiry Codeforces CROC 2016 - Elimination Round 7
857 Lannister Army SPOJ 7
858 LionAge II Codeforces Codeforces Beta Round #66 7
859 Education Reform Codeforces Codeforces Beta Round #90 7
860 Duckindromes UVA 7
861 Brainfuck Timus 7
862 Bulbo Codeforces Bubble Cup 8 - Finals [Online Mirror] 7
863 Longest Run on a Snowboard Live Archive 2006 Asia - Coimbatore 7
864 World Eater Brothers Codeforces Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) 7
865 Rent your airplane and make money UVA 7
866 Kleofáš and the n-thlon Codeforces Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2) 7
867 Wooden Fence Codeforces Codeforces Round #117 (Div. 2) 7
868 Lunar Code Timus 7
869 Top Secret Task Codeforces Codeforces Round #327 (Div. 1) 7
870 Dot Codeforces Codeforces Beta Round #63 (Div. 2) 7
871 Phone Number Codeforces School Team Contest #2 (Winter Computer School 2010/11) 7
872 Yet Another Assignment Problem SPOJ 7
873 Transmitting Levels Codeforces ZeptoLab Code Rush 2015 7
874 Word Cut Codeforces Croc Champ 2012 - Round 2 7
875 Table Tennis UVA 7
876 Treeland Tour Codeforces Codeforces Round #279 (Div. 2) 7
877 Lucky Number Representation Codeforces Codeforces Round #206 (Div. 1) 7
878 Maxim and Matrix Codeforces Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) 7
879 Martian Plates Timus 7
880 Fence Divercity Codeforces Codeforces Round #346 (Div. 2) 7
881 Famil Door and Roads Codeforces Codeforces Round #343 (Div. 2) 7
882 Plus and xor Codeforces All-Ukrainian School Olympiad in Informatics 7
883 Guess the Tree Codeforces Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) 7
884 Divisor Tree Codeforces Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) 7
885 Quest Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 7
886 Special Grid Codeforces Codeforces Round #249 (Div. 2) 7
887 President's Path Codeforces Codeforces Round #241 (Div. 2) 7
888 Beavermuncher-0xFF Codeforces Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) 7
889 Name That Tune Codeforces Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2) 7
890 Captains Mode Codeforces Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2) 7
891 Spiral Maximum Codeforces Croc Champ 2012 - Round 1 7
892 Catch Sheep SPOJ 7
893 Sweets Problem CodeChef 7
894 Comb Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 7
895 Cactus Codeforces Codeforces Round #143 (Div. 2) 7
896 Fafa and Ancient Mathematics Codeforces Codeforces Round #465 (Div. 2) 7
897 Genetic Engineering Codeforces Rockethon 2014 7
898 Sereja and Two Sequences Codeforces Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2) 7
899 Yaroslav and Two Strings Codeforces Codeforces Round #179 (Div. 2) 7
900 Seller Bob Codeforces Codeforces Beta Round #18 (Div. 2 Only) 7
901 Component Testing Live Archive 2012 North America - Mid-Atlantic USA & North America - Southern California & North America - Southeast USA 7
902 Yet Another Answer Timus 7
903 Product Sum Codeforces Codeforces Round #344 (Div. 2) 7
904 Right Triangles Codeforces Codeforces Testing Round #1 7
905 TheProgrammingContestDivOne TopCoder SRM 502 - Div1 medium] () 7
906 Little Artem and Random Variable Codeforces VK Cup 2016 - Round 2 7
907 Lucky Numbers Codeforces Codeforces Beta Round #77 (Div. 1 Only) 7
908 Camels Codeforces Codeforces Beta Round #14 (Div. 2) 7
909 Traffic Jams in the Land Codeforces Codeforces Round #284 (Div. 1) 7
910 Fragile Bridges Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 7
911 Levko and Strings Codeforces Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) 7
912 Changing a String Codeforces Codeforces Beta Round #52 (Div. 2) 7
913 Ralph and Mushrooms Codeforces Codeforces Round #447 (Div. 2) 7
914 Black and White Tree Codeforces Codeforces Round #158 (Div. 2) 7
915 Valera and Fools Codeforces Codeforces Round #216 (Div. 2) 7
916 Identify the Number A2 Online Judge 7
917 On the Bench Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 7
918 Zip-line Codeforces Codeforces Round #345 (Div. 1) 7
919 Segment Sum Codeforces Educational Codeforces Round 53 (Rated for Div. 2) 7
920 Big Maximum Sum Codeforces Codeforces Beta Round #67 (Div. 2) 7
921 Thief in a Shop Codeforces Educational Codeforces Round 9 7
922 Merry-go-round Timus 7
923 Inna and Sequence Codeforces Codeforces Round #220 (Div. 2) 7
924 Optical Experiment Codeforces Manthan 2011 7
925 Two Longest Paths UVA 7
926 Binary Table Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 7
927 Ann and Half-Palindrome Codeforces Codeforces Round #311 (Div. 2) 7
928 Nanami's Digital Board Codeforces Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) 7
929 Pawn Codeforces Codeforces Beta Round #40 (Div. 2) 7
930 Remembering Strings Codeforces Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) 7
931 Ant Man Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 7
932 Archer's Travel Timus 7
933 Coin Troubles Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 7
934 Playing War UVA 7
935 Darth Vader and Tree Codeforces Codeforces Round #291 (Div. 2) 7
936 Beautiful Pairs of Numbers Codeforces Codeforces Round #236 (Div. 1) 7
937 Number Transformation Codeforces Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2) 7
938 Maximum Questions Codeforces Codeforces Round #450 (Div. 2) 7
939 TV Game Codeforces Codeforces Beta Round #31 (Div. 2, Codeforces format) 7
940 Hiking Codeforces Codeforces Round #277.5 (Div. 2) 7
941 Hongcow Buys a Deck of Cards Codeforces Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) 7
942 Game Codeforces Codeforces Beta Round #46 (Div. 2) 7
943 Axis Walking Codeforces Codeforces Round #191 (Div. 2) 7
944 Cubes Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 7
945 FibonacciKnapsack TopCoder SRM 352 - Div1 medium] () 7
946 Vladik and chat Codeforces Codeforces Round #390 (Div. 2) 7
947 First Digit Law Codeforces Codeforces Beta Round #50 7
948 Free Market Codeforces Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2) 7
949 Blood Cousins Return Codeforces Codeforces Round #151 (Div. 2) 7
950 Lost in Space Timus 7
951 Petya and Spiders Codeforces Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only) 7
952 Biathlon Track Codeforces Codeforces Round #242 (Div. 2) 8
953 Find a car Codeforces Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2) 8
954 Vanya and Balloons Codeforces Codeforces Round #355 (Div. 2) 8
955 Cows and Cool Sequences Codeforces Codeforces Round #174 (Div. 1) 8
956 Frequent Flyer Card Timus 8
957 Drazil and Morning Exercise Codeforces Codeforces Round #292 (Div. 1) 8
958 Petya and Post Codeforces Codeforces Beta Round #61 (Div. 2) 8
959 Bombing Codeforces Codeforces Beta Round #47 8
960 Yekaterinburg Subway Timus 8
961 Xenia and Dominoes Codeforces Codeforces Round #199 (Div. 2) 8
962 The Child and Polygon Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 8
963 Inventory UVA 8
964 One-Based Arithmetic Codeforces Testing Round #10 8
965 The Chocolate Spree Codeforces Manthan, Codefest 16 8
966 Diverse Substrings Codeforces Testing Round #9 8
967 Tourist Codeforces All-Ukrainian School Olympiad in Informatics 8
968 Parcels Codeforces Codeforces Round #274 (Div. 1) 8
969 Lucky Arrays Codeforces Codeforces Round #156 (Div. 1) 8
970 Sereja and Intervals Codeforces Codeforces Round #215 (Div. 1) 8
971 Jeff and Brackets Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 8
972 Bath Queue Codeforces Codeforces Beta Round #28 (Codeforces format) 8
973 Triangles Codeforces Codeforces Beta Round #13 8
974 Periodical Numbers Codeforces Codeforces Round #132 (Div. 2) 8
975 Greg and Caves Codeforces Codeforces Round #179 (Div. 1) 8
976 Balance Codeforces Codeforces Beta Round #17 8
977 Michael and Charging Stations Codeforces Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) 8
978 Password Codeforces Codeforces Beta Round #71 8
979 Preorder Test Codeforces 8VC Venture Cup 2016 - Final Round 8
980 Genetic engineering Codeforces Yandex.Algorithm 2011 Round 2 8
981 Gosha is hunting Codeforces Codeforces Round #381 (Div. 1) 8
982 Beads Codeforces Codeforces Beta Round #8 8
983 Flights for Regular Customers Codeforces Codeforces Round #319 (Div. 1) 8
984 Turtles Codeforces Codeforces Round #202 (Div. 1) 8
985 Progress Monitoring Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 8
986 IT Restaurants Codeforces VK Cup 2012 Finals (unofficial online-version) 8
987 Inversions problem Codeforces Rockethon 2015 8
988 Game with Strings Codeforces Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) 8
989 World of Darkraft - 2 Codeforces Codeforces Round #265 (Div. 1) 8
990 Antichain Codeforces Codeforces Round #205 (Div. 2) 8
991 An unavoidable detour for home Codeforces Codeforces Round #418 (Div. 2) 8
992 New Year Garland Codeforces Codeforces Round #100 8
993 Don't fear, DravDe is kind Codeforces Codeforces Beta Round #28 (Codeforces format) 8
994 Brackets Codeforces Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only) 8
995 Ostap and Tree Codeforces Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1) 8
996 Vowels Codeforces Codeforces Round #225 (Div. 1) 8
997 Positions in Permutations Codeforces Codeforces Round #175 (Div. 2) 8
998 Bags and Coins Codeforces Codeforces Round #207 (Div. 1) 8
999 Maxim and Increasing Subsequence Codeforces Codeforces Round #160 (Div. 1) 8
1000 Constants in the language of Shakespeare Codeforces Codeforces Beta Round #96 (Div. 1) 8
1001 What Has Dirichlet Got to Do with That? Codeforces School Team Contest #1 (Winter Computer School 2010/11) 8
1002 Fractal Detector Codeforces Codeforces Round #141 (Div. 2) 8
1003 Tree Codeforces Codeforces Beta Round #23 8
1004 Shaass the Great Codeforces Codeforces Round #178 (Div. 2) 8
1005 Somali Pirates Timus 8
1006 Painting Square Codeforces Codeforces Round #181 (Div. 2) 8
1007 Little Elephant and Broken Sorting Codeforces Codeforces Round #157 (Div. 1) 8
1008 Two Melodies Codeforces Educational Codeforces Round 22 8
1009 Clearing Up Codeforces Codeforces Round #101 (Div. 2) 8
1010 Linear Kingdom Races Codeforces Codeforces Beta Round #87 (Div. 1 Only) 8
1011 e-Government Codeforces VK Cup 2012 Round 2 8
1012 Zublicanes and Mumocrates Codeforces Codeforces Round #322 (Div. 2) 8
1013 Mausoleum Codeforces Codeforces Round #Pi (Div. 2) 8
1014 Castle Codeforces Codeforces Beta Round #79 (Div. 1 Only) 8
1015 Flag 2 Codeforces Codeforces Beta Round #18 (Div. 2 Only) 8
1016 Sereja and Sets Codeforces Codeforces Round #243 (Div. 1) 8
1017 Name Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 8
1018 Beautiful Road Codeforces Codeforces Beta Round #73 (Div. 1 Only) 8
1019 Helping People Codeforces Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2) 8
1020 Dead Ends Codeforces Codeforces Beta Round #49 (Div. 2) 8
1021 LCS Again Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 8
1022 Petya and Coloring Codeforces Codeforces Beta Round #85 (Div. 1 Only) 8
1023 Broken robot Codeforces Codeforces Beta Round #24 8
1024 Tower of Hanoi Codeforces Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2) 8
1025 2048 Codeforces Coder-Strike 2014 - Round 2 8
1026 Wilbur and Trees Codeforces Codeforces Round #331 (Div. 2) 8
1027 Fibonacci army Codeforces Unknown Language Round #2 8
1028 Polycarpus the Safecracker Codeforces VK Cup 2012 Round 1 8
1029 Sweets Game Codeforces Codeforces Beta Round #59 (Div. 2) 8
1030 Help Caretaker Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 8
1031 Common ancestor Codeforces Codeforces Beta Round #46 (Div. 2) 8
1032 Scheme Codeforces Codeforces Beta Round #22 (Div. 2 Only) 8
1033 Alex and Complicated Task Codeforces Codeforces Round #267 (Div. 2) 8
1034 Numbers Codeforces Codeforces Beta Round #72 (Div. 1 Only) 8
1035 Defining Macros Codeforces Codeforces Beta Round #7 8
1036 Number Challenge Codeforces Codeforces Round #146 (Div. 1) 8
1037 Fibonacci Sums Codeforces Codeforces Beta Round #93 (Div. 1 Only) 8
1038 Roads in Yusland Codeforces Codeforces Round #352 (Div. 1) 8
1039 E-The dynamic programming problem2 TJU 8
1040 Bear and Floodlight Codeforces Codeforces Round #226 (Div. 2) 8
1041 Multicolored Marbles Codeforces VK Cup 2012 Finals, Practice Session 8
1042 Widget Library Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
1043 Birthday Codeforces Codeforces Round #282 (Div. 1) 8
1044 The Minimum Number of Variables Codeforces Codeforces Round #171 (Div. 2) 8
1045 Mishka and Divisors Codeforces Codeforces Round #365 (Div. 2) 8
1046 Gifts Codeforces Codeforces Round #142 (Div. 1) 8
1047 Quick Tortoise Codeforces Codeforces Round #144 (Div. 1) 9
1048 Two Subsequences Codeforces Codeforces Beta Round #72 (Div. 1 Only) 9
1049 Power Defence Codeforces Codeforces Round #115 9
1050 Wall Bars Codeforces Codeforces Round #164 (Div. 2) 9
1051 Wilbur and Strings Codeforces Codeforces Round #331 (Div. 2) 9
1052 Research Rover Codeforces Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined) 9
1053 Transferring Pyramid Codeforces Codeforces Round #206 (Div. 1) 9
1054 Superhero's Job Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 9
1055 Cowboys Codeforces VK Cup 2012 Finals (unofficial online-version) 9
1056 Flags Codeforces Codeforces Beta Round #76 (Div. 1 Only) 9
1057 Black Widow Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 9
1058 Red and Black Tree Codeforces Codeforces Round #221 (Div. 1) 9
1059 Garden Codeforces Codeforces Round #108 (Div. 2) 9
1060 Writing a Song Codeforces Codeforces Beta Round #50 9
1061 Gerald and Path Codeforces Codeforces Round #313 (Div. 1) 9
1062 Representative Sampling Codeforces ABBYY Cup 2.0 - Hard 9
1063 Tachibana Kanade's Tofu Codeforces Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) 9
1064 Road to Home Codeforces Codeforces Round #374 (Div. 2) 9
1065 And Yet Another Bracket Sequence Codeforces VK Cup 2015 - Round 1 9
1066 Berland Federalization Codeforces Testing Round #10 9
1067 Little Elephant and Retro Strings Codeforces Codeforces Round #129 (Div. 1) 9
1068 New Year Shopping Codeforces Good Bye 2014 9
1069 Ksenia and Combinatorics Codeforces Codeforces Round #224 (Div. 2) 9
1070 Caterpillar Codeforces Codeforces Beta Round #48 9
1071 A Museum Robbery Codeforces Codeforces Round #333 (Div. 1) 9
1072 Simplified Nonogram Codeforces Codeforces Round #298 (Div. 2) 9
1073 Meeting Her Codeforces Codeforces Round #148 (Div. 1) 9
1074 The Great Julya Calendar Codeforces ABBYY Cup 3.0 - Finals (online version) 9
1075 Moon Craters Codeforces School Team Contest #1 (Winter Computer School 2010/11) 9
1076 Transforming Sequence Codeforces AIM Tech Round (Div. 1) 9
1077 PE Lesson Codeforces ABBYY Cup 3.0 9
1078 Game with Points Codeforces Testing Round #9 9
1079 Lostborn Codeforces Codeforces Beta Round #76 (Div. 1 Only) 9
1080 Hitchhiking in the Baltic States Codeforces Codeforces Round #415 (Div. 1) 9
1081 T-shirt Codeforces Croc Champ 2012 - Final 9
1082 Fibonacci String Subsequences Codeforces Educational Codeforces Round 39 (Rated for Div. 2) 9
1083 Information Reform Codeforces Codeforces Beta Round #64 9
1084 Four Divisors Codeforces Educational Codeforces Round 12 9
1085 Maximum Waterfall Codeforces Codeforces Round #165 (Div. 1) 9
1086 Piglet's Birthday Codeforces Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) 9
1087 Rectangles and Square Codeforces MemSQL start[c]up Round 2 - online version 9
1088 Unambiguous Arithmetic Expression Codeforces Codeforces Beta Round #87 (Div. 1 Only) 9
1089 Ciel and Flipboard Codeforces Codeforces Round #190 (Div. 1) 9
1090 Formurosa Codeforces Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) 9
1091 Pairs Codeforces Yandex.Algorithm Open 2011 Qualification 1 9
1092 Valera and Number Codeforces Codeforces Round #252 (Div. 2) 9
1093 Hyper String Codeforces Croc Champ 2012 - Round 2 9
1094 Hanger Codeforces Codeforces Beta Round #68 9
1095 Pasha and Pipe Codeforces Codeforces Round #293 (Div. 2) 9
1096 Largest Submatrix 3 Codeforces Codeforces Round #239 (Div. 1) 9
1097 Lesson Timetable Codeforces Codeforces Beta Round #37 9
1098 Google Code Jam Codeforces Codeforces Round #170 (Div. 1) 9
1099 Sequence of Balls Codeforces Manthan 2011 9
1100 Dormitory Codeforces Codeforces Round #155 (Div. 2) 9
1101 Random Function and Tree Codeforces Codeforces Round #275 (Div. 1) 9
1102 Little Pony and Elements of Harmony Codeforces Codeforces Round #259 (Div. 1) 9
1103 Pilgrims Codeforces Codeforces Round #202 (Div. 1) 9
1104 Tavas in Kansas Codeforces Codeforces Round #299 (Div. 1) 9
1105 The Great Julya Calendar Codeforces ABBYY Cup 3.0 - Finals (online version) 9
1106 Arrangement Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 9
1107 Candy Store Live Archive 2012 North America - Southeast USA 9
1108 Pudding Monsters Codeforces Zepto Code Rush 2014 9
1109 PE Lesson Codeforces ABBYY Cup 3.0 9
1110 Fox And Travelling Codeforces Codeforces Round #290 (Div. 1) 9
1111 Singer House Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) 9
1112 Domino Carpet Codeforces Codeforces Beta Round #69 (Div. 1 Only) 9
1113 Strange Calculation and Cats Codeforces Codeforces Round #329 (Div. 2) 9
1114 Colorful Stones Codeforces Codeforces Round #162 (Div. 1) 9
1115 DFS Codeforces Lyft Level 5 Challenge 2018 - Final Round 9
1116 Nuclear Fusion Codeforces Codeforces Beta Round #65 (Div. 2) 9
1117 Game with Strings Codeforces Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) 9
1118 Donkey and Stars Codeforces Codeforces Round #152 (Div. 1) 9
1119 Ivan the Fool VS Gorynych the Dragon Codeforces School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) 9
1120 Dima and Figure Codeforces Codeforces Round #167 (Div. 1) 9
1121 Polo the Penguin and Lucky Numbers Codeforces Codeforces Round #177 (Div. 1) 9
1122 Subarray Cuts Codeforces Rockethon 2015 9
1123 Dreamoon and Binary Codeforces Codeforces Round #272 (Div. 1) 9
1124 Xenia and String Problem Codeforces Codeforces Round #207 (Div. 1) 9
1125 Shoe Store Codeforces Codeforces Round #113 (Div. 2) 9
1126 Maxim and Calculator Codeforces Codeforces Round #160 (Div. 1) 9
1127 Crime Management Codeforces Codeforces Beta Round #83 (Div. 1 Only) 9
1128 PE Lesson Codeforces ABBYY Cup 3.0 9
1129 Horse Races Codeforces Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) 9
1130 Triangles Codeforces Codeforces Beta Round #15 9
1131 Yaroslav and Arrangements Codeforces Codeforces Round #182 (Div. 1) 9
1132 Stairs and Lines Codeforces Codeforces Round #284 (Div. 1) 9
1133 Brand New Problem Codeforces Codeforces Round #127 (Div. 1) 9
1134 Plane of Tanks: Duel Codeforces Codeforces Round #115 9
1135 Roadside Trees Codeforces Codeforces Round #162 (Div. 1) 9
1136 Steaks on Board Timus 9
1137 Journey Codeforces Codeforces Beta Round #53 9
1138 Maximum Longest Increasing Subsequence CodeChef 9
1139 Dima and Game Codeforces Codeforces Round #167 (Div. 1) 9
1140 Smart Boy Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 9
1141 Little Elephant and Triangle Codeforces Codeforces Round #136 (Div. 1) 9
1142 Candies and Stones Codeforces Codeforces Beta Round #79 (Div. 1 Only) 9
1143 Faryuks Timus 9
1144 Sandy and Nuts Codeforces Codeforces Round #332 (Div. 2) 9
1145 Sereja and Squares Codeforces Codeforces Round #187 (Div. 1) 9
1146 Subarray Cuts Codeforces Rockethon 2015 9
1147 Polycarp's Masterpiece Codeforces 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) 9
1148 Bear and Cavalry Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) 9
1149 Rhombus Codeforces Codeforces Round #161 (Div. 2) 9
1150 Half-decay tree Codeforces Codeforces Beta Round #62 9
1151 Liars and Serge Codeforces Codeforces Round #156 (Div. 1) 9
1152 Mission Impassable Codeforces Codeforces Round #107 (Div. 1) 9
1153 Maze Codeforces Codeforces Beta Round #92 (Div. 1 Only) 9
1154 Binary Key Codeforces Codeforces Round #193 (Div. 2) 9
1155 World of Darkraft Codeforces Codeforces Beta Round #99 (Div. 1) 9
1156 StackingBoxes TopCoder SRM 261 - Div1 hard] (7995) 9
1157 Dynamic Programming A2 Online Judge 10
1158 Vasily the Bear and Painting Square Codeforces Codeforces Round #195 (Div. 2) 10
1159 New Year Cactus Codeforces Good Bye 2013 10
1160 Mod Mod Mod Codeforces Codeforces Round #445 (Div. 1, based on Technocup 2018 Elimination Round 3) 10
1161 Mrs. Hudson's Pancakes Codeforces Codeforces Round #110 (Div. 1) 10
1162 Expression Codeforces Codeforces Beta Round #54 (Div. 2) 10
1163 Random Ranking Codeforces Codeforces Round #183 (Div. 1) 10
1164 Tree and Table Codeforces Codeforces Round #153 (Div. 1) 10
1165 Forward, march! Codeforces Codeforces Beta Round #11 10
1166 Number of Binominal Coefficients Codeforces Codeforces Round #323 (Div. 1) 10
1167 Longest Increasing Subsequence Codeforces Codeforces Round #315 (Div. 1) 10
1168 Permanent Codeforces Codeforces Round #268 (Div. 1) 10
1169 The Great Marathon Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 10
1170 Subsequences Return Codeforces Codeforces Round #283 (Div. 1) 10
1171 Sequence Transformation Codeforces Codeforces Round #172 (Div. 1) 10
1172 Hellish Constraints Codeforces Codeforces Beta Round #99 (Div. 1) 10
1173 Colored Jenga Codeforces Codeforces Round #242 (Div. 2) 10
1174 Help Shrek and Donkey Codeforces Codeforces Beta Round #78 (Div. 1 Only) 10
1175 Boolean Function Codeforces Codeforces Round #323 (Div. 1) 10
1176 Kyoya and Train Codeforces Codeforces Round #309 (Div. 1) 10
1177 Jzzhu and Squares Codeforces Codeforces Round #257 (Div. 1) 10
1178 Days of Floral Colours Codeforces Codeforces Round #431 (Div. 1) 10
1179 Kojiro and Furrari Codeforces Codeforces Round #322 (Div. 2) 10
1180 School Codeforces School Team Contest #3 (Winter Computer School 2010/11) 10
1181 Sloth Codeforces Codeforces Round #446 (Div. 1) 10
1182 Dynamic Shortest Path Codeforces AIM Tech Round 4 (Div. 1) 10
1183 Digits of Number Pi Codeforces Codeforces Round #325 (Div. 1) 10
1184 Cubes Codeforces Codeforces Round #150 (Div. 1) 10
1185 Stock Trading Codeforces Rockethon 2014 10
1186 Clever Fat Rat Codeforces Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2) 10
1187 Inversions problem Codeforces Rockethon 2015 10
1188 Cookie Clicker Codeforces Codeforces Round #222 (Div. 1) 10
1189 Caramel Clouds Codeforces Codeforces Round #426 (Div. 1) 10
1190 Longest Subsequence Live Archive 2004 Asia - Manila 10
1191 Simba on the Circle Codeforces Educational Codeforces Round 4 10
1192 Counting Skyscrapers Codeforces MemSQL start[c]up Round 2 - online version 10
1193 Geometry Live Archive 2005 Asia - Kolkata 10
1194 Galaxy Union Codeforces School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) 10
1195 World Evil Codeforces Codeforces Beta Round #58 10
1196 Combining Slimes Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 10
1197 Shake It! Codeforces Codeforces Round #431 (Div. 1) 10
1198 An easy problem about trees Codeforces MemSQL Start[c]UP 2.0 - Round 2 10
1199 Deja Vu Codeforces ABBYY Cup 3.0 - Finals (online version) 10
1200 Banners Codeforces Zepto Code Rush 2014 10
1201 Buy One, Get One Free Codeforces MemSQL start[c]up Round 2 - online version 10
1202 Doe Graphs Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 10
1203 #dynamic-programming&nbsp;(168)</span> SPOJ 10
1204 Numbers on the blackboard Codeforces Codeforces Round #443 (Div. 1) 10
1205 Puzzle Lover Codeforces Codeforces Round #339 (Div. 1) 10
1206 Dynamic Assignment Problem SPOJ 10
1207 Summer Reading Codeforces Codeforces Round #217 (Div. 2) 10
1208 Selling Numbers Codeforces Codeforces Round #402 (Div. 1) 10
1209 Ada and Zoo SPOJ 10
1210 Mutation Codeforces All-Ukrainian School Olympiad in Informatics 10
1211 To Hack or not to Hack Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 10