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576C - Points on Plane (Codeforces - Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2)) categories

Category Problems Count
1 Greedy 598
2 Codeforces Div. 2 - E Problems 437
3 constructive algorithms 331
4 sortings 316
5 Geometry 233
6 divide and conquer 66