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 Codeforces {

    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);

        int n = in.nextInt();
        String s = "";
        if (n <= 9) {
            System.out.println(n);
        } else {
            for (int i = 1; i <= n; i++) {
                s += i + "";

            }
            System.out.println(s.charAt(n-1));
        }
    }

}
