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 Competition {

    public static void main(String[] args) {
        String str="";
        int k;
        for(int i=1;str.length()<=10000;i++){
            str=str+i;
        }
        Scanner scan =new Scanner(System.in);
        k=scan.nextInt();
        k=k-1;
        System.out.println(str.charAt(k));
    }
    
}
