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 y, a, b, c, i, d;
int main() {
  cin >> a;
  for (i = a + 1; i <= 10000; i++) {
    y = i / 1000;
    b = i / 100 % 10;
    c = i / 10 % 10;
    d = i % 10;
    if (y != b && y != c && y != d && b != c && b != d && c != d) break;
  }
  cout << i;
}
