#include <bits/stdc++.h>
using namespace std;
int main() {
  cin.tie(nullptr);
  ios::sync_with_stdio(false);
  int n;
  cin >> n;
  ;
  vector<int> a(n);
  for (int i = 0; i < n; i++) cin >> a[i];
  sort(a.begin(), a.end());
  int current = 1;
  for (int i = 0; i < n; i++) {
    if (a[i] < current) continue;
    a[i] = current;
    current++;
  }
  cout << a.back() + 1 << endl;
  return 0;
}
