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375B - Maximum Submatrix 2 (Codeforces - Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2)) categories

Category Problems Count
1 Dynamic Programming 1201
2 implementation 1053
3 data structures 488
4 Codeforces Div. 2 - D Problems 443
5 sortings 316