Educational Codeforces Round 39 (Rated for Div. 2)(A-D)(水题 + 模拟 + 贪心模拟 + DP)

昨天用cf的virtual contest开了一场,作的不是特别理想。半个小时A了三题后就一直划水,今天补了D题。数组 A. Partition You are given a sequence a consisting of n integers. You may partition this sequence into two sequences b and c in such a way t
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