摘要: https://www.acwing.com/problem/content/299/ 1 #include <bits/stdc++.h> 2 using namespace std; 3 4 const int N = 1e3 + 5, mod = 1e9 + 7; 5 6 int n, m; 阅读全文
posted @ 2022-10-13 20:18 Leocsse 阅读(24) 评论(0) 推荐(0)