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 Main {
          public static void main(String[]args) {
Scanner s = new Scanner(System.in);
int n=s.nextInt();
boolean f=true;
if(1000<=n && n<=9000){
    int count=0;
    while(f){
        n+=1;
        String ss=String.valueOf(n);
        for (int i = 0; i < 4; i++) {
            for (int j = i+1; j < 4; j++) {
                if(ss.charAt(i)==ss.charAt(j)){count++;break;}            }
     }
         if(count==0){
                f=false;
    System.out.println(n);
}
        count=0;
    }
}
    else{
        System.out.println("Invalid value");
    }
}
}