It seems like the year of 2013 came only yesterday. Do you know a curious fact? The year of 2013 is the first year after the old 1987 with only distinct digits.

Now you are suggested to solve the following problem: given a year number, find the minimum year number which is strictly larger than the given one and has only distinct digits.

Input

The single line contains integer y (1000 ≤ y ≤ 9000) — the year number.

Output

Print a single integer — the minimum year number that is strictly larger than y and all it's digits are distinct. It is guaranteed that the answer exists.

Examples

Input

1987


Output

2013


Input

2013


Output

2014
#include <bits/stdc++.h>
using namespace std;
int main() {
  int year, c = 0, a[4];
  cin >> year;
  bool flag = false;
  for (int i = 1;; ++i) {
    c = year + i;
    a[0] = (c % 10000 - c % 1000) / 1000;
    a[1] = (c % 1000 - c % 100) / 100;
    if (a[0] == a[1]) continue;
    a[2] = (c % 100 - c % 10) / 10;
    if (a[0] == a[2] or a[1] == a[2]) continue;
    a[3] = c % 10;
    if (a[0] == a[3] or a[1] == a[3] or a[2] == a[3]) {
      continue;
    }
    cout << c;
    break;
  }
}
