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538C - Tourist's Notes (Codeforces - Codeforces Round #300) categories

Category Problems Count
1 implementation 1055
2 math 684
3 Greedy 603
4 brute force 494
5 Codeforces Div. 2 - C Problems 460
6 Best Problem Setters 410
7 Binary Search & Ternary Search 352