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224B - Array (Codeforces - Codeforces Round #138 (Div. 2)) categories

Category Problems Count
1 implementation 1055
2 Codeforces Div. 2 - A Problems 482
3 Codeforces Div. 2 - B Problems 459
4 Binary Search & Ternary Search 352
5 two pointers 128
6 bitmasks 114