| Id | Category | Problems Count |
|---|---|---|
| 1 | Dynamic Programming | 1211 |
| 2 | Implementation | 1054 |
| 3 | math | 679 |
| 4 | Greedy | 599 |
| 5 | DFS & BFS & Dijkstra | 565 |
| 6 | brute force | 494 |
| 7 | data structures | 489 |
| 8 | Binary Search & Ternary Search | 350 |
| 9 | constructive algorithms | 331 |
| 10 | sortings | 316 |
| 11 | Graphs | 291 |
| 12 | Geometry | 254 |
| 13 | Number Theory | 251 |
| 14 | strings | 216 |
| 15 | combinatorics | 215 |
| 16 | trees | 202 |
| 17 | Segment Tree | 162 |
| 18 | Network Flow | 159 |
| 19 | probabilities | 153 |
| 20 | two pointers | 128 |
| 21 | dsu | 116 |
| 22 | bitmasks | 113 |
| 23 | Matrix Power | 90 |