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>
int main() {
  int i, j, k, l, y, m, n;
  char s[101], t[101];
  scanf("%d", &y);
  for (i = y + 1;; i++) {
    n = i;
    j = n % 10;
    n = n / 10;
    k = n % 10;
    n = n / 10;
    l = n % 10;
    n = n / 10;
    if (n != l && n != k && n != j && l != k && l != j && k != j) {
      printf("%d\n", i);
      return 0;
    }
  }
  return 0;
}
