题目描述
https://www.luogu.com.cn/problem/P1659
简要题意:给定一个长度为
https://codeforces.com/problemset/problem/1599/F
简要题意:给定一个长度为
https://www.luogu.com.cn/problem/P5838
简要题意:给定一棵
https://codeforces.com/problemset/problem/954/I
简要题意:给定两个字符串
http://acm.hdu.edu.cn/showproblem.php?pid=6756
简要题意:给定一个
https://www.luogu.com.cn/problem/P5385
简要题意:给定一个