func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 100005;   int n, a[4];   char s[N];   int main() {     cin >> n >> s;     for (int i = 0; i < n; ++i) {       if (s[i] ==  A )         a[0]++;       else if (s[i] ==  C )         a[1]++;       else if (s[i] ==  G )         a[2]++;       else if (s[i] ==  T )         a[3]++;     }     sort(a, a + 4);     int mx = a[3];     long long m = 0;     for (int i = 0; i < 4; ++i)       if (a[i] == mx) m++;     long long ans = 1;     for (int i = 0; i < n; ++i) ans = (ans * m) % (1000000007);     cout << ans << endl;   }   