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() {
  long int a, b, c, d, i, y, x, x1, x2, x3;
  cin >> y;
  y = y + 1;
  for (i = y;; i++) {
    x = i;
    a = x % 10;
    x = x / 10;
    b = x % 10;
    x = x / 10;
    c = x % 10;
    x = x / 10;
    d = x % 10;
    if ((a == b) || (b == c) || (c == d) || (d == a) || (a == c) || (b == d))
      continue;
    else
      cout << i;
    return 0;
  }
}
