func_code_string: #include <bits/stdc++.h>   using namespace std;   int sol1, sol2, sol3, n;   string str;   int main() {     cin >> n >> str;     for (int i = 0; i < str.length(); i++) {       if (str[i] ==  A )         sol1++;       else if (str[i] ==  I )         sol2++;     }     sol3 = str.length() - sol1 - sol2;     if (sol2 == 0) {       cout << sol1 << endl;       return 0;     }     if (sol2 > 1)       cout << 0 << endl;     else       cout << 1 << endl;     return 0;   }   