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;
  cin >> n;
  n++;
  while (true) {
    string temp = to_string(n);
    bool isOk = true;
    for (int i = 0; i < temp.size() - 1; i++) {
      for (int j = i + 1; j < temp.size(); j++) {
        if (temp[i] == temp[j]) isOk = false;
      }
    }
    if (isOk) {
      cout << n;
      break;
    } else {
      n++;
    }
  }
  return 0;
}
