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81 Egg Roulette bitmasks brute force divide and conquer math meet-in-the-middle Statement F MemSQL Start[c]UP 3.0 - Round 2 (onsite finalists) {865} PROGRAMMING MemSQL Start[c]UP 3.0 Round 2 Editorial 3300
9126 Maximum Subsequence bitmasks divide and conquer meet-in-the-middle Statement E Educational Codeforces Round 32 {888} PROGRAMMING Educational Codeforces Round 32 - Editorial 1800
1895 Number of k-good subarrays bitmasks combinatorics divide and conquer dp math meet-in-the-middle Statement E Codeforces Round 955 (Div. 2, with prizes from NEAR!) {1982} PROGRAMMING 2500.0 130839