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;
import java.util.Arrays;

/**
 *
 * @author Simran
 */
public class BeautifulYear {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner s = new Scanner(System.in);
        int n = s.nextInt();
        
        while(n>0){
        int y=n+1;
        
        String str = Integer.toString(y);
        int x = str.length();
        int arr[] = new int[x];
        for(int i=0;i<x;i++){
        arr[i] = str.charAt(i);        
        }//for closed
        
        Arrays.sort(arr);
        int sum=0;
        for(int i=0;i<x-1;i++){
        if(arr[i]!= arr[i+1]){
        sum +=1;
        }//if closed
                         
        }//for closed
        
        if(sum == x-1){
        System.out.println(y);
        break;
        }
        else{
        n =n+1;
        }
        }//while closed
    }
    
}
