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 distinct(int year) {
  return ((year / 1000) != (year / 100 % 10) &&
          (year / 1000) != (year / 10 % 10) && (year / 1000) != (year % 10) &&
          (year / 100 % 10) != (year / 10 % 10) &&
          (year / 100 % 10) != (year % 10) && (year / 10 % 10) != (year % 10));
}
int main() {
  int year;
  cin >> year;
  int i = 1, cont;
  cont = year;
  while (i != -1) {
    cont++;
    if (distinct(cont)) {
      i = -1;
    }
  }
  cout << cont << endl;
  return 0;
}
