#include <bits/stdc++.h>
using namespace std;
signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  ;
  long long int n;
  cin >> n;
  long long int a[n];
  long long int sum = 0;
  for (long long int i = 0; i < n; i++) {
    cin >> a[i];
    sum += a[i];
  }
  sort(a, a + n);
  long long int req = ceil(sum / (long double)(n - 1));
  cout << max(req, a[n - 1]);
}
