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BFS标记路径(1) C F 水题(20) dfs(1) SDNUOJ(26) vector(1) 一点发现(3) 一点算法(3) 冒泡排序(1) 强制改变类型(1) 快速幂（取模）(1) 所谓函数(1) 数组a[-1](1) 未归档(62) 栈stack(1) 线性筛(1) 队列queue(1) 随笔(1)

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A. Repeating Cipher

Polycarp loves ciphers. He has invented his own cipher called repeating. Repeating cipher is used for strings. To encrypt the string s=s1s2…sms=s1s2…...

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2019-01-06

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