[AtCoder] Snuke has decided to construct a string that starts with A and ends with Z, by taking out a substring of a string s (that is, a consecutive part of s). - 题解

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题目信息
题号 P15861
标题 [AtCoder] Snuke has decided to construct a string that starts with A and ends with Z, by taking out a substring of a string s (that is, a consecutive part of s).
难度 普及-
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