必对

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

ll a[30],n,m,mod=1e9+7;
string s;
int main(){
cin>>n>>s;
for (int i=0;i<n;i++){
a[s[i]-'A']++;
}
cout<<a['A'-'A']a['Y'-'A']%moda['N'-'A']%mod*a['U'-'A']%mod;
}