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 data, a1, a2, a3, a4, a5;
  cin >> data;
  data++;
  int temp = data;
  a1 = temp / 1000;
  temp -= a1 * 1000;
  a2 = temp / 100;
  temp -= a2 * 100;
  a3 = temp / 10;
  temp -= a3 * 10;
  a4 = temp / 1;
  while ((a1 == a2) || (a1 == a3) || (a1 == a4) || (a2 == a3) || (a2 == a4) ||
         (a3 == a4)) {
    data++;
    temp = data;
    a1 = temp / 1000;
    temp -= a1 * 1000;
    a2 = temp / 100;
    temp -= a2 * 100;
    a3 = temp / 10;
    temp -= a3 * 10;
    a4 = temp / 1;
  }
  cout << data << endl;
}
