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 m;
  bool ok = false;
  int l = 0;
  cin >> m;
  m = m + 1;
  string n;
  while (ok == false) {
    n = to_string((long long)m);
    for (int i = 0; i < n.length(); i++) {
      for (int j = 0; j < n.length(); j++) {
        if ((n[i] == n[j]) && (i != j)) {
          l++;
          ok == false;
        }
      }
    }
    if (ok == false && l == 0) {
      ok = true;
    } else {
      m = stoi(n) + 1;
      ok = false;
    }
    l = 0;
  }
  cout << m << endl;
  return 0;
}
