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;
import java.util.ArrayList;
import java.util.List;
public class Main{
    Scanner scanner = new Scanner(System.in);
    ArrayList<Integer> numbers = new ArrayList<>();
    public static void main(String[] args){
        new Main();
    }
    
    
    public Main(){
        int count = scanner.nextInt();
        for (int i = 1; i <= count; i++){
            String temp = i + "";
            String[] tempA = temp.split("");
            for (String s : tempA){
                numbers.add(Integer.parseInt(s));
            }
        }
        System.out.println(numbers.get(count - 1));
    }
    
}