func_code_string: #include <bits/stdc++.h>   using namespace std;   signed main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     long long n;     cin >> n;     vector<char> v;     long long ca = 0, ci = 0, cf = 0;     for (long long i = 0; i < n; i++) {       char a;       cin >> a;       v.push_back(a);       if (a ==  A ) ca++;       if (a ==  I ) ci++;       if (a ==  F ) cf++;     }     if (ca + cf == n)       cout << ca;     else {       if (ci > 1)         cout << 0;       else         cout << ci;     }     for (long long i = 1; i < n; i++) {     }   }   