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
/// solution;

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
import java.math.*;
public class Solution {
      public static void main(String args[] ) throws Exception {
    	  int O=0;
    	  
    	  BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
             String a = bufferedReader.readLine();
             int input= Integer.parseInt(a);
     		String s ="";
     		for(int i=1; i<=input; i++){
     		    s = s.concat(Integer.toString(i));
     		}
     		System.out.println(s.charAt(input-1));

}}