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 n, x, d[10], i, l, number;
bool flag;
int main() {
  cin >> n;
  for (number = n + 1;; number++) {
    x = number;
    l = 0;
    while (x > 0) {
      d[l] = x % 10;
      l++;
      x /= 10;
    }
    flag = true;
    sort(d, d + l);
    for (i = 0; i <= l - 2; i++) {
      if (d[i] == d[i + 1]) {
        flag = false;
      }
    }
    if (flag) {
      cout << number;
      return 0;
    }
  }
  return 0;
}
