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 akash = new Scanner(System.in);
		
		int number=akash.nextInt();
		int number1=0,number2=0,number3=0,number4=0;
		int reminder=0,j=0;
		
		for(int i=number+1; ;i++) {
			
			int temp=i;
			
			while(temp!=0) {
				
				j++;
				reminder=temp%10;
				
				if(j==1) {
					number1=reminder;
				}
				else if(j==2) {
					number2=reminder;
				}
				else if(j==3) {
					number3=reminder;
				}
				else {
					number4=reminder;
				}
				temp/=10;
			}
		
			if(number1!=number2 && number1!=number3 && number1!=number4 && number2!=number3 && number2!=number4 && number3!=number4) {
				System.out.println(i);
				break;
			}
			else {
				j=0;
			}
		}
		akash.close();
	}
}