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
import java.io.*;
import java.util.*;
import java.math.*;

public class Main
{
  public static void main(String[] args)
  {
    // String s;
    // String num = "0123456789";
    int mark[] = new int[10];
    int n, m, k, y;
    Scanner in = new Scanner(new BufferedInputStream(System.in));
    while (in.hasNext()){
      n = in.nextInt();
      for (int i = n+1; ; i++) {
        k = i;
        for (int j = 0; j < 10; j++) {
          mark[j] = 0;
        }
        // for (int j = 0; j < 10; j++){
        //   System.out.print(mark[j]+" ");
        // }
        while(k != 0){
          y = k % 10;
          // System.out.println(y);
          mark[y]++;
          k /= 10;
        }
        // for (int j = 0; j < 10; j++){
        //   System.out.print(mark[j]+" ");
        // }
        m = 0;
        for (int j = 0; j < 10; j++) {
          if (mark[j] > 1) {
            m = 1;
          }
        }
        if (m == 0) {
          System.out.println(i);
          break;
        }
      }
    }
  }
}