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.BufferedReader;
import java.io.InputStreamReader;
import java.util.Scanner;

public class DigitsSequence {
    public static void main(String[] args) {
        Scanner sc = new Scanner(new BufferedReader(new InputStreamReader(System.in)));

        String str = "";
        int k = sc.nextInt();

        for (int i=1; i<=k; i++) {
            str += i;
        }

        // System.out.println(str);
        System.out.println(str.charAt(k-1));
    }
}
