| 4 × | misc | 1 × | geometry | 1 × | warm-up | ||
| 3 × | graph | 1 × | divide-and-conquer | 1 × | judge | ||
| 3 × | dynamic-programming | 1 × | combinatorics | 1 × | backtracking | ||
| 2 × | graphs | 1 × | suffix-trie | ||||
| 2 × | uva | 1 × | string | ||||
| 2 × | greedy | 1 × | maximum-flow | ||||
| 1 × | lazarus | 1 × | path | ||||
| 1 × | convex-hull | 1 × | shortest |