CodeForces - 873B Balanced Substring(思维)
摘要：
inputstandard input outputstandard output You are given a string s consisting only of characters 0 and 1. A substring [l, r] of s is a string slsl + 1 阅读全文
posted @ 2018-08-05 00:33 大桃桃 阅读(178) 评论(0) 推荐(0)
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