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.*;
import java.lang.*;
import java.io.*;
 
 
public class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
    	Scanner sc = new Scanner(System.in);
    	int n = sc.nextInt();
    	String str = "";
    	int i=1;
    	while(str.length()<n){
    	    str += Integer.toString(i);
    	    i++;
    	}
    	System.out.println(str.charAt(n-1));
    	
        
	}
}