Codeforces Round #636 (Div. 3)---題解(A、B、C)

文章目錄 A. Candies B. Balanced Array C. Alternating Subsequence A. Candies 連接:http://codeforces.com/contest/1343/problem/Aios Recently Vova found n candy wrappers. He remembers that he bought x candies d
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