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 digitsSequence{
	public static void main(String[]args){
		Scanner sc = new Scanner(System.in);
		int x = sc.nextInt();
		String s = "";
		for(int i=0;s.length()<x ;i++){
			s=s+(i+1);
		}
		System.out.println(s.charAt(x-1));		
	}
}