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.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class A1177{
	public static void main(String[] args) throws FileNotFoundException {

		Scanner scan = new Scanner(System.in);
		int index = scan.nextInt();
		
		
		String s = "";
		for(long i = 0  ; i < index + 1 ; i ++) {
			s += "" + i;
		}
		/*System.out.println(s);
		String str = s.substring(1);
		System.out.println(str);
*/
		System.out.println(s.charAt(index));
    }
}