#include <bits/stdc++.h>
using namespace std;
;
int main() {
  int n;
  scanf("%d", &n);
  int a[n];
  for (int i = 0; i < n; ++i) {
    scanf("%d", &a[i]);
  }
  sort(a, a + n);
  a[0] = 1;
  for (int i = 1; i < n; ++i) {
    if (a[i] != a[i - 1]) {
      a[i] = a[i - 1] + 1;
    }
  }
  printf("%d\n", a[n - 1] + 1);
  return 0;
}
