func_code_string: #include <bits/stdc++.h>   using namespace std;   const int NMAX = 200005;   int n;   char str[NMAX];   int in, allin;   int main() {     ios_base ::sync_with_stdio(false);     cin.tie(NULL);     cin >> n;     cin >> str;     for (int i = 0; i < n; ++i)       if (str[i] ==  A )         ++allin;       else if (str[i] ==  I )         ++in;     if (!in)       cout << allin <<   n ;     else       cout << (in == 1 ? 1 : 0) <<   n ;     return 0;   }   