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 _0820DigitsSequence {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		int k=sc.nextInt();
		String store="";
		int i=1;
		while(store.length()<k) {
			store+=i;
			i++;
		}
		System.out.print(store.charAt(k-1));
	}

}
