func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     string s;     cin >> s;     int ans = 0;     for (int i = 0; i < n; i++) {       if (s[i] ==  -  && ans > 0) ans--;       if (s[i] ==  + ) ans++;     }     cout << ans << endl;   }   