latstars的博客

#include<cstdio> #include<cstring> #include<algorithm> #include<iostream> #include<cmath> #include<queue> #include<vector> #include<string> using namespace std; const int SIGMA_SIZE=26; const int MAXNO

#include<cstdio> #include<cstring> #include<algorithm> #include<iostream> using namespace std; const int maxn=47+3; const int maxm=447+10; int A[maxn]; typedef long long LL; const int mod=1e9+7; LL fac