2019年2月12日
[meet in the middle]String Coloring
摘要： 题目描述 You are given a string S of length 2N consisting of lowercase English letters.There are 22N ways to color each character in S red or blue. Among 阅读全文
posted @ 2019-02-12 17:08 l..q 阅读(161) 评论(0) 推荐(0)