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
//package codeforces;
import java.util.Scanner;

public class Digit_Sequence {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		  Scanner sc = new Scanner(System.in);
	        String s = "";
	        for(int i = 1;i<10000;i++){s += i;}
	        int k = sc.nextInt();
	        System.out.println(s.charAt(k-1));

	}

}
