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 year;
  scanf("%d", &year);
  int cnt = 0;
  for (int i = year + 1;; i++) {
    char str[5];
    snprintf(str, 5, "%d", i);
    if (str[0] != str[1] && str[0] != str[2] && str[0] != str[3] &&
        str[1] != str[2] && str[1] != str[3] && str[2] != str[3]) {
      printf("%d", i);
      return 0;
    }
  }
  return 0;
}
