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4A - Watermelon (Codeforces - Codeforces Beta Round #4 (Div. 2 Only)) categories

Category Problems Count
1 Dynamic Programming 1209
2 implementation 1054
3 math 679
4 brute force 494
5 Codeforces Div. 2 - A Problems 476
6 strings 216
7 Problem list 100
8 The_scorpion 24