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 Main {
  public static int digitSequence(int loc){
    String s = "";
    int count =0;
    int i=1;
    while(count < loc){
      s+= Integer.toString(i);
      i++;
      count = s.length();
    };
    int result = Character.getNumericValue(s.charAt(loc-1));

    return result;
  }
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int loc = sc.nextInt();
    sc.close();
    System.out.println(digitSequence(loc));
  }
}