Data Structures

Problem Name Online Judge Year Contest Difficulty Level
1 Can you answer these queries II SPOJ 1
2 4 Values whose Sum is 0 Live Archive 2005 Europe - Southwestern 1
3 Theatre Square Codeforces Codeforces Beta Round #1 1
4 Street Parade SPOJ 1
5 Little Girl and Maximum Sum Codeforces Codeforces Round #169 (Div. 2) 1
6 Simple Math A2 Online Judge 1
7 Sereja and Suffixes Codeforces Codeforces Round #215 (Div. 2) 1
8 How to Handle the Fans SPOJ 1
9 Prison Transfer Codeforces Codeforces Round #244 (Div. 2) 1
10 Can you answer these queries III SPOJ 1
11 Number of Ways Codeforces Codeforces Round #266 (Div. 2) 1
12 Snacktower Codeforces Codeforces Round #398 (Div. 2) 1
13 Registration System Codeforces Codeforces Beta Round #4 (Div. 2 Only) 1
14 Division of Nlogonia UVA 1
15 A and B and Compilation Errors Codeforces Codeforces Round #294 (Div. 2) 1
16 Xenia and Bit Operations Codeforces Codeforces Round #197 (Div. 2) 1
17 Maximum Sum SPOJ 1
18 Watchmen Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 1
19 Han Solo and Lazer Gun Codeforces Codeforces Round #291 (Div. 2) 1
20 Banknotes and Coins URI 1
21 Misha and Changing Handles Codeforces Codeforces Round #285 (Div. 2) 1
22 Can you answer these queries I SPOJ 1
23 Color the Fence Codeforces Codeforces Round #202 (Div. 2) 2
24 Counting heaps Live Archive 2008 Europe - Central 2
25 Modulo Sum Codeforces Codeforces Round #319 (Div. 2) 2
26 Karen and Coffee Codeforces Codeforces Round #419 (Div. 2) 2
27 Chat Order Codeforces VK Cup 2016 - Qualification Round 1 2
28 Binary Search Tree UVA 2
29 Thor Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 2
30 Photo to Remember Codeforces VK Cup 2015 - Qualification Round 1 2
31 Hoax or what UVA 2
32 Game of Credit Cards Codeforces Codeforces Round #401 (Div. 2) 2
33 Anya and Smartphone Codeforces Codeforces Round #293 (Div. 2) 2
34 FIGUREFUL SPOJ 2
35 Knight Tournament Codeforces Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2) 2
36 Replacement Codeforces Codeforces Round #316 (Div. 2) 2
37 Sonya and Queries Codeforces Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2) 2
38 Escape from Stones Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 2
39 Airport Codeforces Codeforces Round #134 (Div. 2) 2
40 The Festive Evening Codeforces Codeforces Round #426 (Div. 2) 2
41 Cd and pwd commands Codeforces VK Cup 2012 Qualification Round 1 2
42 Greg and Array Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 2
43 True Friends SPOJ 2
44 Vasya and Multisets Codeforces Educational Codeforces Round 51 (Rated for Div. 2) 2
45 Alternating Current Codeforces Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2) 2
46 Geometric Progression Codeforces Codeforces Round #Pi (Div. 2) 2
47 Hardwood Species TJU 2
48 Misha and Forest Codeforces Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) 3
49 Stripe Codeforces Codeforces Beta Round #18 (Div. 2 Only) 3
50 Not Equal on a Segment Codeforces Educational Codeforces Round 7 3
51 Interesting Array Codeforces Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) 3
52 Bear and Blocks Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 3
53 Maximum Absurdity Codeforces Codeforces Round #193 (Div. 2) 3
54 Level Order Tree Traversal URI 3
55 Mike and Feet Codeforces Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2) 3
56 Stacks Timus 3
57 Milking cows Codeforces Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2) 3
58 Vasiliy's Multiset Codeforces Codeforces Round #367 (Div. 2) 3
59 Multithreading Codeforces Codeforces Round #165 (Div. 2) 3
60 Regular Bracket Sequence Codeforces Codeforces Beta Round #26 (Codeforces format) 3
61 Colorful Graph Codeforces Codeforces Round #151 (Div. 2) 3
62 Almost Union-Find UVA 3
63 Pashmak and Parmida's problem Codeforces Codeforces Round #261 (Div. 2) 3
64 Glass Carving Codeforces Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) 3
65 Good Substrings Codeforces Codeforces Round #166 (Div. 2) 3
66 Heap Operations Codeforces Codeforces Round #357 (Div. 2) 3
67 New Reform Codeforces Codeforces Round #346 (Div. 2) 3
68 Longest Regular Bracket Sequence Codeforces Codeforces Beta Round #5 3
69 Powerful array Codeforces Yandex.Algorithm 2011 Round 2 3
70 A and B and Interesting Substrings Codeforces Codeforces Round #294 (Div. 2) 3
71 Little Elephant and Array Codeforces Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2) 3
72 Bear and Prime Numbers Codeforces Codeforces Round #226 (Div. 2) 3
73 Replace To Make Regular Bracket Sequence Codeforces Educational Codeforces Round 4 3
74 Present Codeforces Codeforces Round #262 (Div. 2) 3
75 Okabe and Boxes Codeforces Codeforces Round #420 (Div. 2) 3
76 Plug-in Codeforces Yandex.Algorithm Open 2011 Qualification 1 3
77 Dima and Staircase Codeforces Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1) 3
78 Sereja and Algorithm Codeforces Codeforces Round #215 (Div. 1) 3
79 Bubble Sort Graph Codeforces Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) 3
80 Blue Mary Needs Help Again SPOJ 3
81 Order Book Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) 3
82 Sereja and Brackets Codeforces Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2) 3
83 Longest k-Good Segment Codeforces Educational Codeforces Round 5 4
84 After Training Codeforces Codeforces Round #123 (Div. 2) 4
85 Lazy Student Codeforces Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2) 4
86 Ice-cream Tycoon SGU 4
87 One-Dimensional Battle Ships Codeforces Codeforces Round #Pi (Div. 2) 4
88 Circular RMQ Codeforces Codeforces Testing Round #1 4
89 Ant colony Codeforces Codeforces Round #271 (Div. 2) 4
90 Little Elephant and Cards Codeforces Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2) 4
91 Find Pair Codeforces Codeforces Round #111 (Div. 2) 4
92 Vanya and Triangles Codeforces Codeforces Round #308 (Div. 2) 4
93 Processing Queries Codeforces CROC 2016 - Qualification 4
94 XOR and Favorite Number Codeforces Codeforces Round #340 (Div. 2) 4
95 Money Transfers Codeforces Codeforces Round #353 (Div. 2) 4
96 SBE201 Linked List SPOJ 4
97 Ada and List SPOJ 4
98 Petya and Divisors Codeforces Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only) 4
99 Xenia and Tree Codeforces Codeforces Round #199 (Div. 2) 4
100 Babaei and Birthday Cake Codeforces Codeforces Round #343 (Div. 2) 4
101 Drazil and Tiles Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 4
102 Fools and Roads Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 4
103 Almost Arithmetical Progression Codeforces Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) 4
104 Case of Fugitive Codeforces Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2) 4
105 King's Path Codeforces Codeforces Round #149 (Div. 2) 4
106 Tree Construction Codeforces Codeforces Round #353 (Div. 2) 4
107 Matrix Codeforces Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2) 4
108 Alyona and a tree Codeforces Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2) 4
109 Planets Codeforces Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2) 4
110 Report Codeforces Codeforces Round #344 (Div. 2) 4
111 Pair of Numbers Codeforces Codeforces Round #209 (Div. 2) 4
112 XOR on Segment Codeforces Codeforces Round #149 (Div. 2) 4
113 Friends or Not Codeforces VK Cup 2012 Qualification Round 2 4
114 Propagating tree Codeforces Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2) 4
115 Remove Extra One Codeforces Codeforces Round #450 (Div. 2) 4
116 Enemy is weak Codeforces Codeforces Beta Round #57 (Div. 2) 4
117 Psychos in a Line Codeforces Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) 4
118 String Manipulation 1.0 Codeforces VK Cup 2012 Qualification Round 2 4
119 New Year Snowmen Codeforces Codeforces Round #100 4
120 Arthur and Table Codeforces Codeforces Round #311 (Div. 2) 4
121 Vessels Codeforces Codeforces Round #218 (Div. 2) 4
122 Fox And Jumping Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 4
123 Predict Outcome of the Game Codeforces Codeforces Round #258 (Div. 2) 4
124 Clique Problem Codeforces Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) 4
125 Maximum Submatrix 2 Codeforces Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2) 4
126 Queue Codeforces Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only) 4
127 Anagram Search Codeforces Codeforces Round #103 (Div. 2) 4
128 A and B and Lecture Rooms Codeforces Codeforces Round #294 (Div. 2) 4
129 Mail Stamps Codeforces Codeforces Beta Round #29 (Div. 2, Codeforces format) 5
130 Connected Components Codeforces Croc Champ 2013 - Round 1 5
131 Tree and Queries Codeforces Codeforces Round #221 (Div. 1) 5
132 Maxim and Array Codeforces Codeforces Round #374 (Div. 2) 5
133 Sereja ans Anagrams Codeforces Codeforces Round #215 (Div. 1) & Codeforces Round #215 (Div. 2) 5
134 Exposition Codeforces Codeforces Beta Round #6 (Div. 2 Only) 5
135 Lipshitz Sequence Codeforces Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2) 5
136 Missile Silos Codeforces Codeforces Round #103 (Div. 2) 5
137 Hanoi Factory Codeforces Codeforces Round #401 (Div. 2) 5
138 Spy Syndrome 2 Codeforces Manthan, Codefest 16 5
139 Misha and Permutations Summation Codeforces Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) 5
140 Persistent Bookcase Codeforces Codeforces Round #368 (Div. 2) 5
141 Strip Codeforces Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) 5
142 Nested Segments Codeforces Educational Codeforces Round 10 5
143 Copying Data Codeforces Croc Champ 2013 - Round 1 5
144 Preparing for the Contest Codeforces Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2) 5
145 Bracket Sequence Codeforces Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2) 5
146 Fedor and coupons Codeforces Codeforces Round #390 (Div. 2) 5
147 Running with Obstacles Codeforces VK Cup 2016 - Qualification Round 1 5
148 CGCDSSQ Codeforces Bayan 2015 Contest Warm Up 5
149 Cards Sorting Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals) 5
150 A Simple Task Codeforces Codeforces Round #312 (Div. 2) 5
151 The Child and Sequence Codeforces Codeforces Round #250 (Div. 1) 5
152 Sausage Maximization Codeforces Codeforces Round #173 (Div. 2) 5
153 Colorful Field Codeforces Codeforces Beta Round #71 5
154 Subsegments Codeforces Codeforces Beta Round #63 (Div. 2) 5
155 Friends and Subsequences Codeforces Codeforces Round #361 (Div. 2) 5
156 Duff in the Army Codeforces Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2) 5
157 Kay and Snowflake Codeforces Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) 5
158 Petr# Codeforces Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) 5
159 Suspects Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 5
160 Mahmoud and a Dictionary Codeforces Codeforces Round #396 (Div. 2) 5
161 Case of Chocolate Codeforces Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2) 5
162 Handshakes Codeforces Codeforces Round #298 (Div. 2) 5
163 Statistics of Recompressing Videos Codeforces VK Cup 2015 - Qualification Round 2 5
164 Blood Cousins Codeforces Codeforces Round #130 (Div. 2) 5
165 Water Tree Codeforces Codeforces Round #200 (Div. 1) 5
166 Tricky Function Codeforces Codeforces Round #245 (Div. 1) 5
167 New Year Tree Codeforces Educational Codeforces Round 6 5
168 Mishka and Interesting sum Codeforces Codeforces Round #365 (Div. 2) 5
169 Minimum spanning tree for each edge Codeforces Educational Codeforces Round 3 5
170 Unordered Subsequence Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 5
171 Text Editor Codeforces Codeforces Round #154 (Div. 2) 5
172 Cartons of milk Codeforces Codeforces Round #398 (Div. 2) 5
173 Factory Repairs Codeforces 8VC Venture Cup 2016 - Final Round 5
174 Maximum Xor Secondary Codeforces Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2) 5
175 The Bakery Codeforces Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2) 5
176 R2D2 and Droid Army Codeforces Codeforces Round #291 (Div. 2) 5
177 Vitya and Strange Lesson Codeforces Codeforces Round #430 (Div. 2) 5
178 Pillars Codeforces Codeforces Round #271 (Div. 2) 5
179 Leaving Auction Codeforces Codeforces Round #388 (Div. 2) 5
180 Little Artem and Time Machine Codeforces VK Cup 2016 - Round 2 5
181 Watching Fireworks is Fun Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 6
182 Mike and Geometry Problem Codeforces Codeforces Round #361 (Div. 2) 6
183 Vanya and Treasure Codeforces Codeforces Round #355 (Div. 2) 6
184 LIS of Sequence Codeforces Codeforces Round #277 (Div. 2) 6
185 Appleman and a Sheet of Paper Codeforces Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) 6
186 Time to Raid Cowavans Codeforces Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) 6
187 DZY Loves Colors Codeforces Codeforces Round #254 (Div. 1) & Codeforces Round #254 (Div. 2) 6
188 Summer Homework Codeforces ABBYY Cup 3.0 6
189 Boredom Codeforces Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) & Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises) 6
190 Drazil and Park Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 6
191 Serega and Fun Codeforces Codeforces Round #260 (Div. 1) 6
192 Ciel and Gondolas Codeforces Codeforces Round #190 (Div. 1) 6
193 Arthur and Walls Codeforces Codeforces Round #297 (Div. 2) 6
194 Kefa and Watch Codeforces Codeforces Round #321 (Div. 2) 6
195 DZY Loves Fibonacci Numbers Codeforces Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2) 6
196 Leha and another game about graph Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 6
197 Closest Equals Codeforces VK Cup 2015 - Qualification Round 1 6
198 Hiring Codeforces 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) 6
199 Yaroslav and Divisors Codeforces Codeforces Round #182 (Div. 1) 6
200 Infinite Inversions Codeforces Codeforces Round #301 (Div. 2) 6
201 Two Strings Codeforces Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2) 6
202 Sum of Medians Codeforces Yandex.Algorithm 2011 Round 1 6
203 Shortest Path A2 Online Judge 6
204 New Year Domino Codeforces Good Bye 2014 6
205 Valera and Queries Codeforces Codeforces Round #216 (Div. 2) 6
206 Cubes Codeforces Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1) 6
207 Holes Codeforces Codeforces Beta Round #13 6
208 Kindergarten Codeforces Codeforces Round #276 (Div. 1) 6
209 Oh Sweet Beaverette Codeforces ABBYY Cup 3.0 - Finals (online version) 6
210 Restructuring Company Codeforces VK Cup 2015 - Finals, online mirror 6
211 Artem and Array Codeforces Codeforces Round #253 (Div. 1) 6
212 Sereja and Subsequences Codeforces Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2) 6
213 Beaver Codeforces Codeforces Beta Round #71 6
214 Legacy Codeforces Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2) 6
215 Rooter's Song Codeforces Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2) 6
216 New Year Tree Codeforces Good Bye 2013 6
217 Messenger Codeforces Codeforces Round #344 (Div. 2) 6
218 Mahmoud and a xor trip Codeforces Codeforces Round #396 (Div. 2) 6
219 Trains and Statistic Codeforces Codeforces Round #353 (Div. 2) 6
220 Insertion Sort Codeforces Codeforces Round #212 (Div. 2) 6
221 Hydra Codeforces Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2) 6
222 Lucky Queries Codeforces Codeforces Round #104 (Div. 1) 6
223 Buses Codeforces Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) 6
224 On Changing Tree Codeforces Codeforces Round #232 (Div. 1) & Codeforces Round #232 (Div. 2) 6
225 Subsequences Codeforces Testing Round #12 6
226 GukiZ and GukiZiana Codeforces Codeforces Round #307 (Div. 2) 6
227 Mister B and PR Shifts Codeforces Codeforces Round #421 (Div. 1) & Codeforces Round #421 (Div. 2) 6
228 A Heap of Heaps Codeforces Codeforces Round #300 6
229 Little Elephant and Shifts Codeforces Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2) 7
230 Product Sum Codeforces Codeforces Round #344 (Div. 2) 7
231 George and Cards Codeforces Codeforces Round #227 (Div. 2) 7
232 Fools and Foolproof Roads Codeforces Codeforces Round #212 (Div. 2) 7
233 Alyona and towers Codeforces Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2) 7
234 Bug in Code Codeforces Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) 7
235 Encrypting Messages Codeforces ABBYY Cup 2.0 - Easy 7
236 Lucky Array Codeforces Codeforces Beta Round #91 (Div. 1 Only) 7
237 Beautiful Subarrays Codeforces Educational Codeforces Round 12 7
238 General Mobilization Codeforces Yandex.Algorithm 2011 Qualification 2 7
239 Maximum Questions Codeforces Codeforces Round #450 (Div. 2) 7
240 Iahub and Xors Codeforces Codeforces Round #198 (Div. 1) 7
241 Ada and Mulberry SPOJ 7
242 Optical Experiment Codeforces Manthan 2011 7
243 Vika and Segments Codeforces Codeforces Round #337 (Div. 2) 7
244 Counter Attack Codeforces Codeforces Round #120 (Div. 2) 7
245 Sereja and Squares Codeforces Codeforces Round #243 (Div. 1) 7
246 Guess Your Way Out! II Codeforces Codeforces Round #312 (Div. 2) 7
247 Ski Base Codeforces Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only) 7
248 Spider's Web Codeforces Codeforces Round #133 (Div. 2) 7
249 Petya and File System Codeforces Codeforces Beta Round #61 (Div. 2) 7
250 Little Elephant and Inversions Codeforces Codeforces Round #136 (Div. 1) 7
251 Points Codeforces Codeforces Beta Round #19 7
252 Envy Codeforces Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) 7
253 Inna and Binary Logic Codeforces Codeforces Round #234 (Div. 2) 7
254 Cactus Codeforces Codeforces Round #143 (Div. 2) 7
255 Last Chance Codeforces Codeforces Beta Round #98 (Div. 2) 7
256 Embassy Queue Codeforces Yandex.Algorithm 2011 Round 1 7
257 Corporation Mail Codeforces Codeforces Beta Round #52 (Div. 2) 7
258 Traffic Jams in the Land Codeforces Codeforces Round #284 (Div. 1) 7
259 Ralph And His Tour in Binary Country Codeforces Codeforces Round #447 (Div. 2) 7
260 Ball Codeforces Codeforces Beta Round #12 (Div 2 Only) 7
261 Acyclic Organic Compounds Codeforces Codeforces Round #333 (Div. 1) 7
262 Hostname Aliases Codeforces CROC 2016 - Qualification 7
263 Parking Lot Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 7
264 Inna and Sequence Codeforces Codeforces Round #220 (Div. 2) 7
265 Range Increments Codeforces VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) 7
266 Garlands Codeforces Codeforces Round #368 (Div. 2) 7
267 Students' Revenge Codeforces Codeforces Round #193 (Div. 2) 7
268 Crayon SPOJ 7
269 Till I Collapse Codeforces Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2) 7
270 Domino Principle Codeforces Codeforces Beta Round #52 (Div. 2) 7
271 Bug in Code Codeforces Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) 7
272 Mushroom Gnomes - 2 Codeforces Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2) 7
273 Bear and Contribution Codeforces VK Cup 2016 - Round 1 7
274 Little Girl and Problem on Trees Codeforces Codeforces Round #169 (Div. 2) 7
275 Old Berland Language Codeforces Codeforces Beta Round #37 7
276 New Year and Three Musketeers Codeforces Good Bye 2015 7
277 Happy Tree Party Codeforces Codeforces Round #329 (Div. 2) 7
278 Anton and Permutation Codeforces Codeforces Round #404 (Div. 2) 7
279 Comb Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 7
280 Big Maximum Sum Codeforces Codeforces Beta Round #67 (Div. 2) 7
281 Dima and Trap Graph Codeforces Codeforces Round #214 (Div. 2) 7
282 Beer Machines SPOJ 7
283 Blood Cousins Return Codeforces Codeforces Round #151 (Div. 2) 7
284 Rooks and Rectangles Codeforces VK Cup 2015 - Round 1 7
285 Subset Sums Codeforces Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2) 7
286 Little Elephant and Tree Codeforces Codeforces Round #157 (Div. 1) 7
287 Beard Graph Codeforces Codeforces Round #112 (Div. 2) 7
288 Sign on Fence Codeforces Codeforces Round #276 (Div. 1) 7
289 Cats Transport Codeforces Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) 7
290 Zip-line Codeforces Codeforces Round #345 (Div. 1) 7
291 Working routine Codeforces Codeforces Round #367 (Div. 2) 7
292 The Untended Antiquity Codeforces Codeforces Round #439 (Div. 2) 7
293 Package Delivery Codeforces 8VC Venture Cup 2016 - Final Round 7
294 Treeland Tour Codeforces Codeforces Round #279 (Div. 2) 7
295 Sereja and Two Sequences Codeforces Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2) 7
296 Bindian Signalizing Codeforces Codeforces Beta Round #5 7
297 Zebra Tower Codeforces VK Cup 2012 Qualification Round 2 7
298 Ann and Half-Palindrome Codeforces Codeforces Round #311 (Div. 2) 7
299 Two Permutations Codeforces Codeforces Round #131 (Div. 1) 8
300 Roads in Yusland Codeforces Codeforces Round #352 (Div. 1) 8
301 Smart Cheater Codeforces Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2) 8
302 More Queries to Array... Codeforces Codeforces Round #163 (Div. 2) 8
303 Instant Messanger Codeforces Codeforces Round #233 (Div. 1) 8
304 Eyes Closed Codeforces Codeforces Round #448 (Div. 2) 8
305 Ultimate Weirdness of an Array Codeforces Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2) 8
306 Zbazi in Zeydabad Codeforces Educational Codeforces Round 8 8
307 Tricky and Clever Password Codeforces Codeforces Beta Round #30 (Codeforces format) 8
308 Birthday Codeforces Codeforces Round #282 (Div. 1) 8
309 Tournament Codeforces Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2) 8
310 Printer Codeforces Codeforces Round #154 (Div. 2) 8
311 Alex and Complicated Task Codeforces Codeforces Round #267 (Div. 2) 8
312 Mashmokh and Water Tanks Codeforces Codeforces Round #240 (Div. 1) 8
313 Tourist Codeforces All-Ukrainian School Olympiad in Informatics 8
314 Dancing Lessons Codeforces School Team Contest #3 (Winter Computer School 2010/11) 8
315 Inna and Candy Boxes Codeforces Codeforces Round #229 (Div. 2) 8
316 Choosing Subtree is Fun Codeforces Codeforces Round #219 (Div. 1) 8
317 Jeff and Removing Periods Codeforces Codeforces Round #204 (Div. 1) 8
318 Building Forest Codeforces Codeforces Round #123 (Div. 2) 8
319 Board Game Codeforces Codeforces Round #335 (Div. 1) 8
320 Kay and Eternity Codeforces Codeforces Round #359 (Div. 1) 8
321 Interval Cubing Codeforces Codeforces Round #185 (Div. 1) 8
322 Cup Trick Codeforces Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) 8
323 Optimal Sum Codeforces Codeforces Round #117 (Div. 2) 8
324 Inversions After Shuffle Codeforces Codeforces Round #388 (Div. 2) 8
325 Little Elephant and Strings Codeforces Codeforces Round #129 (Div. 1) 8
326 Parade Codeforces Codeforces Beta Round #35 (Div. 2) 8
327 Alphabet Permutations Codeforces Codeforces Round #337 (Div. 2) 8
328 Goodbye Souvenir Codeforces Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2) 8
329 Competition Codeforces Codeforces Round #103 (Div. 2) 8
330 Igloo Skyscraper Codeforces Codeforces Beta Round #75 (Div. 1 Only) 8
331 Ilya and Two Numbers Codeforces Codeforces Round #186 (Div. 2) 8
332 Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths Codeforces Codeforces Round #383 (Div. 1) 8
333 Startup Funding Codeforces Manthan, Codefest 16 8
334 Pudding Monsters Codeforces ZeptoLab Code Rush 2015 8
335 Robot Arm Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 8
336 Memory and Casinos Codeforces Codeforces Round #370 (Div. 2) 8
337 Power Tree Codeforces Codeforces Round #336 (Div. 1) 8
338 Conveyor Belts Codeforces Codeforces Round #278 (Div. 1) 8
339 Three strings Codeforces MemSQL Start[c]UP 2.0 - Round 1 8
340 Paper task Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 8
341 Summer Homework Codeforces ABBYY Cup 3.0 8
342 Mike and Friends Codeforces Codeforces Round #305 (Div. 1) 8
343 Close Vertices Codeforces Croc Champ 2013 - Round 2 8
344 Developing Game Codeforces Codeforces Round #222 (Div. 1) 8
345 Lucky Tickets Codeforces Codeforces Beta Round #64 8
346 Thwarting Demonstrations Codeforces Codeforces Round #121 (Div. 1) 8
347 Lucky Arrays Codeforces Codeforces Round #156 (Div. 1) 8
348 e-Government Codeforces VK Cup 2012 Round 2 8
349 Destiny Codeforces Codeforces Round #429 (Div. 1) 8
350 Place Your Ad Here Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 8
351 Cow Tennis Tournament Codeforces Codeforces Round #174 (Div. 1) 8
352 Yash And Trees Codeforces Manthan, Codefest 16 8
353 Anniversary Codeforces Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2) 8
354 Linear Kingdom Races Codeforces Codeforces Beta Round #87 (Div. 1 Only) 8
355 Tourists Codeforces Codeforces Round #278 (Div. 1) 8
356 Vladik and Entertaining Flags Codeforces Codeforces Round #416 (Div. 2) 8
357 Optimize! Codeforces Codeforces Round #196 (Div. 1) 8
358 Yura and Developers Codeforces Looksery Cup 2015 8
359 Biathlon Track Codeforces Codeforces Round #242 (Div. 2) 8
360 REQ Codeforces Codeforces Round #330 (Div. 1) 8
361 Permutation Codeforces MemSQL Start[c]UP 2.0 - Round 1 8
362 Professor's task Codeforces Codeforces Beta Round #64 8
363 Queue Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 8
364 Shave Beaver! Codeforces ABBYY Cup 3.0 - Finals (online version) 8
365 Dividing Kingdom II Codeforces Codeforces Round #360 (Div. 1) 8
366 Adam and Tree Codeforces Codeforces Round #253 (Div. 1) 8
367 Sereja and Straight Lines Codeforces Codeforces Round #187 (Div. 1) 8
368 Archaeology Codeforces Croc Champ 2012 - Round 2 8
369 Parking Lot Codeforces Codeforces Round #135 (Div. 2) 8
370 Petya and Post Codeforces Codeforces Beta Round #61 (Div. 2) 8
371 Cinema Codeforces Codeforces Round #126 (Div. 2) 8
372 Don't fear, DravDe is kind Codeforces Codeforces Beta Round #28 (Codeforces format) 8
373 Frogs and mosquitoes Codeforces Educational Codeforces Round 3 8
374 Yaroslav and Points Codeforces Codeforces Round #179 (Div. 1) 8
375 Animals and Puzzle Codeforces Codeforces Round #371 (Div. 1) 8
376 Bear and Bowling 4 Codeforces Educational Codeforces Round 11 8
377 TorCoder Codeforces Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 8
378 Chip Play Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
379 Cardboard Box Codeforces Zepto Code Rush 2014 8
380 k-Maximum Subsequence Sum Codeforces Codeforces Round #172 (Div. 1) 8
381 Hanger Codeforces Codeforces Beta Round #68 9
382 And Yet Another Bracket Sequence Codeforces VK Cup 2015 - Round 1 9
383 Parking Lot Codeforces Codeforces Round #274 (Div. 1) 9
384 Fetch the Treasure Codeforces Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) 9
385 Clockwork Bomb Codeforces Codeforces Round #345 (Div. 1) 9
386 Mirror Room Codeforces Codeforces Round #168 (Div. 1) 9
387 Zigzag Codeforces Codeforces Round #141 (Div. 2) 9
388 Polycarp's Masterpiece Codeforces 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) 9
389 Friends Codeforces Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) 9
390 Sereja and Dividing Codeforces Codeforces Round #223 (Div. 1) 9
391 Dividing Kingdom Codeforces Codeforces Round #158 (Div. 2) 9
392 Maximum Waterfall Codeforces Codeforces Round #165 (Div. 1) 9
393 Camping Groups Codeforces Croc Champ 2012 - Round 1 9
394 The Classic Problem Codeforces Codeforces Round #265 (Div. 1) 9
395 Summer Homework Codeforces ABBYY Cup 3.0 9
396 Arkady and a Nobody-men Codeforces Codeforces Round #434 (Div. 1, based on Technocup 2018 Elimination Round 1) 9
397 Freezing with Style Codeforces Codeforces Round #107 (Div. 1) 9
398 Half-decay tree Codeforces Codeforces Beta Round #62 9
399 Buses and People Codeforces Codeforces Round #111 (Div. 2) 9
400 Bear and Cavalry Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) 9
401 Function Codeforces Codeforces Round #260 (Div. 1) 9
402 Two permutations Codeforces Testing Round #7 9
403 Rhombus Codeforces Codeforces Round #161 (Div. 2) 9
404 Alien DNA Codeforces Codeforces Round #134 (Div. 1) 9
405 Constrained Tree Codeforces Rockethon 2015 9
406 The Next Good String Codeforces Codeforces Round #124 (Div. 1) 9
407 Karen and Cards Codeforces Codeforces Round #419 (Div. 1) 9
408 Fence Codeforces Codeforces Round #144 (Div. 1) 9
409 Raffles Codeforces 8VC Venture Cup 2016 - Elimination Round 9
410 A Museum Robbery Codeforces Codeforces Round #333 (Div. 1) 9
411 Optimizer Codeforces Testing Round #6 9
412 Lucky Pair Codeforces Codeforces Round #104 (Div. 1) 9
413 Big Problems for Organizers Codeforces RCC 2014 Warmup (Div. 1) 9
414 Timofey and a flat tree Codeforces Codeforces Round #395 (Div. 1) 9
415 Mike and code of a permutation Codeforces Codeforces Round #410 (Div. 2) 9
416 Duff as a Queen Codeforces Codeforces Round #326 (Div. 1) 9
417 Design Tutorial: Increase the Constraints Codeforces Codeforces Round #270 9
418 Gripping Story Codeforces Codeforces Round #125 (Div. 1) 9
419 Hitchhiking in the Baltic States Codeforces Codeforces Round #415 (Div. 1) 9
420 BRT Contract Codeforces Codeforces Round #119 (Div. 1) 9
421 Tavas on the Path Codeforces Codeforces Round #299 (Div. 1) 9
422 k-d-sequence Codeforces Codeforces Round #239 (Div. 1) 9
423 Welcome home, Chtholly Codeforces Codeforces Round #449 (Div. 1) 9
424 Cutting a Fence Codeforces VK Cup 2012 Finals (unofficial online-version) 9
425 Two Segments Codeforces Codeforces Round #122 (Div. 1) 9
426 Map Codeforces Codeforces Beta Round #15 9
427 Pastoral Oddities Codeforces Codeforces Round #334 (Div. 1) 9
428 Chemistry Experiment Codeforces Codeforces Round #247 (Div. 2) 9
429 Tourists Codeforces Codeforces Round #176 (Div. 1) 9
430 Roadside Trees Codeforces Codeforces Round #162 (Div. 1) 9
431 Fibonacci-ish II Codeforces Manthan, Codefest 16 9
432 Cannon Codeforces Codeforces Beta Round #44 (Div. 2) 9
433 Xors on Segments Codeforces Educational Codeforces Round 6 9
434 Bear and Bad Powers of 42 Codeforces Codeforces Round #356 (Div. 1) 9
435 Noble Knight's Path Codeforces Codeforces Round #140 (Div. 1) 9
436 Forensic Examination Codeforces Codeforces Round #349 (Div. 1) 9
437 Donkey and Stars Codeforces Codeforces Round #152 (Div. 1) 9
438 Little Pony and Lord Tirek Codeforces Codeforces Round #259 (Div. 1) 9
439 Ping-Pong Codeforces Codeforces Round #189 (Div. 1) 9
440 Maze 2D Codeforces Coder-Strike 2014 - Round 2 9
441 Huffman Coding on Segment Codeforces Codeforces Round #364 (Div. 1) 9
442 Greedy Elevator Codeforces Codeforces Round #159 (Div. 2) 9
443 Shooting Gallery Codeforces School Team Contest #2 (Winter Computer School 2010/11) 10
444 Wizards and Roads Codeforces Codeforces Round #114 (Div. 1) 10
445 Escaping on Beaveractor Codeforces ABBYY Cup 3.0 - Finals (online version) 10
446 Listening to Music Codeforces Codeforces Round #302 (Div. 1) 10
447 New task Codeforces Codeforces Round #407 (Div. 1) 10
448 Cubes Codeforces Codeforces Round #150 (Div. 1) 10
449 Berland Miners Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 10
450 Lada Malina Codeforces Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) 10
451 Game with Two Trees Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
452 Mystic Carvings Codeforces Codeforces Round #180 (Div. 1) 10
453 Banners Codeforces Zepto Code Rush 2014 10
454 Summer Dichotomy Codeforces Codeforces Round #300 10
455 Sequence Transformation Codeforces Codeforces Round #172 (Div. 1) 10
456 ALT Codeforces Codeforces Round #406 (Div. 1) 10
457 Two Circles Codeforces Codeforces Round #211 (Div. 2) 10
458 Longest Increasing Subsequence Codeforces Codeforces Round #315 (Div. 1) 10
459 Matrix Codeforces Codeforces Round #150 (Div. 1) 10
460 Frog Fights Codeforces Codeforces Round #342 (Div. 2) 10
461 Arpa’s abnormal DNA and Mehrdad’s deep interest Codeforces Codeforces Round #383 (Div. 1) 10
462 Landmarks Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 10
463 ELCA Codeforces Codeforces Round #275 (Div. 1) 10
464 Mashmokh's Designed Problem Codeforces Codeforces Round #240 (Div. 1) 10
465 Supercollider Codeforces Rockethon 2014 10
466 Soap Time! - 2 Codeforces Codeforces Round #118 (Div. 1) 10
467 Rap God Codeforces Codeforces Round #406 (Div. 1) 10
468 Two Rooted Trees Codeforces Codeforces Round #236 (Div. 1) 10
469 Meta-universe Codeforces Bayan 2015 Contest Warm Up 10
470 Robots protection Codeforces Bubble Cup 8 - Finals [Online Mirror] 10
471 Name the album Codeforces Unknown Language Round #3 10
472 Three Arrays Codeforces Codeforces Round #230 (Div. 1) 10
473 Inna and Babies Codeforces Codeforces Round #220 (Div. 2) 10
474 Gnomes of Might and Magic Codeforces Codeforces Round #115 10
475 Organizing a Race Codeforces Codeforces Round #352 (Div. 1) 10
476 Campus Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) 10
477 Tape Programming Codeforces Codeforces Round #148 (Div. 1) 10
478 Bear and Chemistry Codeforces VK Cup 2016 - Round 1 10
479 Dreamoon and Notepad Codeforces Codeforces Round #272 (Div. 1) 10
480 Painting Edges Codeforces Codeforces Round #319 (Div. 1) 10
481 Duck Hunt Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 10
482 Tricky Password Codeforces RCC 2014 Warmup (Div. 1) 10
483 Red-Black Cobweb Codeforces Codeforces Round #426 (Div. 1) 10
484 Caramel Clouds Codeforces Codeforces Round #426 (Div. 1) 10
485 Tree or not Tree Codeforces Codeforces Beta Round #88 10
486 Stack Codeforces Surprise Language Round #6 10
487 Duff is Mad Codeforces Codeforces Round #326 (Div. 1) 10
488 Heaven Tour Codeforces Codeforces Round #119 (Div. 1) 10
489 MUH and Lots and Lots of Segments Codeforces Codeforces Round #269 (Div. 2) 10