Let's write all the positive integer numbers one after another from 1 without any delimiters (i.e. as a single string). It will be the infinite sequence starting with 123456789101112131415161718192021222324252627282930313233343536...

Your task is to print the k-th digit of this sequence.

Input

The first and only line contains integer k (1 ≤ k ≤ 10000) — the position to process (1-based index).

Output

Print the k-th digit of the resulting infinite sequence.

Examples

Input


7


Output


7


Input


21


Output


5
import java.util.Scanner;

public class sequence {

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		Scanner s=new Scanner(System.in);
		String e="";
		int y= s.nextInt();
		int i=1;
		while(true) {
			e+=i;	
			i++;
			if(i>y) {
				break;
			}
			
		}
		System.out.print(e.charAt(y-1));		
	}

}