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.util.Scanner;
public class Interview {
    public static void main(String[] args){
        Scanner S = new Scanner(System.in);
        int num = S.nextInt();
        num = num + 1;
        
        Interview ob = new Interview();
        ob.func(num);
    }
    public void func(int num){
          int b = num;
          int[] arr = new int[4];
          for(int i=0;i<arr.length;i++){
               int a = b%10;
               arr[i] = a;
               b = b/10;
          }
          if(arr[0] != arr[1] && arr[0] != arr[2] && arr[0] != arr[3]  
                  && arr[1] != arr[2] && arr[1] != arr[3] && arr[2] != arr[3]){
              System.out.println(num);
          }
          else{
              func(num+1);
          }
         
          
    }
    
    
    
}