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() {
  int year, a, b, c, d, flag = 0;
  cin >> year;
  while (true) {
    year++;
    int t = year;
    while (t > 0) {
      a = t % 10;
      t = t / 10;
      b = t % 10;
      t = t / 10;
      c = t % 10;
      t = t / 10;
      d = t % 10;
      if (a != b && a != c && a != d && c != b && d != b && b != d && d != c) {
        flag = 1;
        break;
      } else
        break;
    }
    if (flag == 1) {
      cout << year;
      break;
    }
  }
}
