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, i, j, r, di, a, b, c, d, new_year;
  int ara[5];
  scanf("%d", &year);
  year++;
  new_year = year;
  while (year) {
    i = 3;
    while (year) {
      r = year % 10;
      di = year / 10;
      year = di;
      ara[i] = r;
      i--;
    }
    a = ara[0];
    b = ara[1];
    c = ara[2];
    d = ara[3];
    if (a != b && a != c && a != d && b != c && b != d && c != d) {
      printf("%d%d%d%d\n", a, b, c, d);
      year = 0;
    } else {
      new_year++;
      year = new_year;
    }
  }
  return 0;
}
