摘要: #include<bits/stdc++.h> using namespace std; #define maxn 300005 #define ll long long const int mod = 1e9+7; const int modd = 1e9+6; //欧拉降幂 ll n,f1,f2 阅读全文
posted @ 2019-06-14 21:51 Mmasker 阅读(133) 评论(0) 推荐(0)