func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     string s;     cin >> s;     int minval = 100000000, currsum = 0;     for (int i = 0; i < n; i++) {       if (s[i] ==  ( ) {         currsum++;         minval = min(minval, currsum);       } else {         currsum--;         minval = min(minval, currsum);       }     }     if (minval < -1)       cout <<  NO ;     else if (minval == -1) {       if (!currsum)         cout <<  YES ;       else         cout <<  NO ;     } else {       if (currsum)         cout <<  NO ;       else         cout <<  YES ;     }     return 0;   }   