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 DigitalSequence{

    public static void print(String s){
        System.out.println(s);
    }
    public static void main(String[] args) {
        short k = new Scanner(System.in).nextShort(), i = 1;
        String y= "";
        while(y.length()<=k)
            y += i++;
        print(""+y.charAt(k-1));
    }   
}