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489B - BerSU Ball (Codeforces - Codeforces Round #277.5 (Div. 2)) categories

Category Problems Count
1 Dynamic Programming 1201
2 Greedy 598
3 DFS & BFS & Dijkstra 565
4 Codeforces Div. 2 - B Problems 456
5 sortings 316
6 two pointers 128
7 Maximum Matching / Vertex Cover on Bipartite Graph 50