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;
bool check(int X) {
  if (X % 10 == X / 1000) return true;
  if (X % 10 == (X / 100) % 10) return true;
  if (X % 10 == (X % 100) / 10) return true;
  if ((X % 100) / 10 == (X / 100) % 10) return true;
  if (X / 1000 == (X / 100) % 10) return true;
  if (X / 1000 == (X % 100) / 10) return true;
  return false;
}
int main() {
  int X;
  cin >> X;
  X++;
  while (check(X)) {
    X++;
  }
  cout << X;
  return 0;
}
