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 a;
  scanf("%d", &a);
  for (int i = a + 1; i <= 9999; i++) {
    int a = i % 10, b = i % 100 / 10, c = i % 1000 / 100, d = i / 1000;
    if ((a != b && a != c && a != d) && (b != c && b != d) && (c != d)) {
      printf("%d\n", i);
      break;
    }
  }
  return 0;
}
