摘要：
Mr. Frog has an integer sequence of length n, which can be denoted as a1,a2,⋯,ana1,a2,⋯,anThere are m queries. In the i-th query, you are given two in 阅读全文
摘要：
A Gragh Games Unsolved. B Crazy Binary String 题解：水题，子序列只要统计0和1数量，取最小值然后乘2就是答案； 对于子串：先记录0和1 前缀和的差值，然后找差值相等的距离最远的两个位置即可； 参考代码： #include<bits/stdc++.h> # 阅读全文