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 yr;
  cin >> yr;
  while (1) {
    yr++;
    int l = yr / 1000;
    int y = yr / 100 % 10;
    int u = yr / 10 % 10;
    int k = yr % 10;
    if (l != y && l != u && l != k && y != u && y != k && u != k) {
      break;
    }
  }
  cout << yr;
}
