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() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cout.tie(0);
  int n;
  cin >> n;
  while (true) {
    n++;
    int f = n / 1000;
    int s = n / 100 % 10;
    int t = n / 10 % 10;
    int fo = n % 10;
    if (f != s && f != t && f != fo && s != t && s != t && s != fo && t != fo)
      break;
  }
  cout << n << endl;
  return 0;
}
