func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     int len = 20000;     string di;     int mo;     string ans[2] = { NO ,  YES };     bool yes = 1;     for (int i = 0; i < n; ++i) {       cin >> mo >> di;       if (len == 20000 && di !=  South ) yes = 0;       if (len == 0 && di !=  North ) yes = 0;       if (len > 20000 || len < 0) yes = 0;       if (di ==  South ) len -= mo;       if (di ==  North ) len += mo;     }     yes = (len == 20000) && yes;     cout << ans[yes];     return 0;   }   