Try Again
摘要: B. Balanced Substring You are given a string s consisting only of characters 0 and 1. A substring [l, r] of s is a string slsl + 1sl + 2... sr, and it 阅读全文
posted @ 2017-10-14 13:13 十年换你一句好久不见 阅读(341) 评论(0) 推荐(0) 编辑