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 Z1177A {
	public static void main(String[] args) {
	
		Scanner in = new Scanner(System.in);
		int k = in.nextInt();
		String NS = "";
		
		for (int i=0; i <= 10000; i++) 
			NS = NS + i;
		String S = NS.substring(k, k+1);
		System.out.println(S);
	}
}
