func_code_string: #include <bits/stdc++.h>   using namespace std;   int isreq(char c) { return (c ==  H ) || (c ==  Q ) || (c ==  9 ); }   int main() {     int n;     cin >> n;     int cnt = 0;     string str;     for (int i = 0; i < n; i++) {       cin >> str;       if (str[1] ==  + ) {         cnt++;       } else if (str[1] ==  - ) {         cnt--;       }     }     cout << cnt << endl;   }   