#include <bits/stdc++.h>   using namespace std;   int main() {     int n, a[101], t = 0;     cin >> n;     for (int i = 1; i <= n; i++) {       cin >> a[i];       t += a[i];     }     int ans = 0;     for (int j = 1; j <= 5; j++) {       int k = t + j, i = 0;       while (k) {         k--;         if (!k) break;         i = ((i + 1) % (n + 1));       }       if (i != 0) ans++;     }     cout << ans << endl;     return 0;   }   