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25D - Roads not only in Berland (Codeforces - Codeforces Beta Round #25 (Div. 2 Only)) categories

Category Problems Count
1 DFS & BFS & Dijkstra 565
2 brute force 494
3 Codeforces Div. 2 - D Problems 443
4 graphs 291
5 trees 202
6 dsu 116