摘要: #include<bits/stdc++.h> using namespace std; typedef long long ll; typedef long double ld; const ll N = 1e6 + 9; const ll inf = 0x3f3f3f3f; ll exgcd(l 阅读全文
posted @ 2021-08-11 11:16 u_yan 阅读(28) 评论(0) 推荐(0) 编辑