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 n, t, a, b, i, j;
  string s;
  cin >> n;
  while (true) {
    n++;
    s = to_string(n);
    if (s[0] == s[1] || s[0] == s[2] || s[0] == s[3] || s[1] == s[2] ||
        s[1] == s[3] || s[2] == s[3])
      continue;
    else {
      cout << s << endl;
      break;
    }
  }
  return 0;
}
