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 glass {

	public static void main(String[] args) {
		Scanner in1 = new Scanner(System.in);
		int num = in1.nextInt();
		in1.close();
		if(num >= 1000 ) {
			//System.out.println("the number is greater than 9000 or less than 1000");
			
		
		for(int i = num +1 ; i <= 1000000 ;i++) {
		   int num1 = i % 10/ 1;
		   int num2 = i % 100/ 10;
		   int num3 = i % 1000/ 100;
		   int num4 = i % 10000/ 1000;
		   if(num1 != num2 && num1 != num3 && num1 != num4 
		   && num2 != num3 && num2 != num4
		   && num3 != num4 ) {
			   System.out.println(i); 
			   break;
			   }
		   }
		}
	}
}