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.*;
public class Main {
	public static void main (String[] args) {
		Scanner in=new Scanner(System.in);
		int k=in.nextInt();
		StringBuilder s=new StringBuilder("");
		int i=1;
		while(s.length()<k)
		{
		    s.append(String.valueOf(i));
		    i++;
		}
		System.out.println(s.charAt(k-1));
	}
}
 		 	 			    	  		  			   	 			