摘要: 题目链接 C1: http://codeforces.com/contest/1286/problem/C1 C2: http://codeforces.com/contest/1286/problem/C2 题解 首先考虑C1怎么做: 先询问整个串,再询问前$(n 1)$个字符。二者相比对,对于每 阅读全文