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 Codechef{

	public static void main(String[] args) {
		
		Scanner sc =new Scanner(System.in);
		StringBuffer numbers=new StringBuffer("");
		for(int i=0; i<Math.pow(10, 4); i++) {
			numbers.append(i);	
		}
		
		//System.out.println(numbers);
		//System.out.println();
		//System.out.println("Enter the Position");
		int position=sc.nextInt();
		System.out.println(numbers.charAt(position));
		
		
	}
}