Codeforces Round #428 (Div. 2) 题解 (蓝 -> 紫)

比赛连接:http://codeforces.com/contest/839 写个题解记念上紫 A. Arya and Bran time limit per test: 1 second memory limit per test: 256 megabytes Bran and his older sister Arya are from the same house. Bran like ca
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