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 year(long a) {
  long di1 = a % 10;
  long di2 = (a % 100) / 10;
  long di3 = (a % 1000) / 100;
  long di4 = a / 1000;
  if (di1 != di2 && di1 != di3 && di1 != di4 && di2 != di3 && di2 != di4 &&
      di3 != di4)
    return true;
  return false;
}
int main() {
  long a;
  cin >> a;
  a++;
  while (year(a) != true) a++;
  cout << a;
}
