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() {
  short y;
  cin >> y;
  short a, b, c;
  for (short i = y + 1; i <= 9012; ++i) {
    short j = i;
    a = j / 1000;
    j %= 1000;
    b = j / 100;
    j %= 100;
    c = j / 10;
    j %= 10;
    if (a != b && a != c && a != j && b != c && b != j && c != j) {
      cout << i;
      return 0;
    }
  }
  return 0;
}
