#include <bits/stdc++.h>   using namespace std;   int minimumStones(string s, int n) {     int i = 0, counts = 0;     while (s[i] ==  - ) {       counts++;       i++;     }     for (int i = 0; i < n; i++) {       if (s[i] ==  - )         counts--;       else         counts++;       if (counts == 0) {         int j = i + 1;         while (s[j] ==  - ) {           counts++;           j++;         }       }     }     return counts;   }   int main() {     int n;     cin >> n;     string s;     cin >> s;     cout << minimumStones(s, n);   }   