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.*;

import java.util.*;
import java.math.*;
import java.nio.charset.Charset;


public class Main{
    public static void main(String[] args) throws IOException {
 
    BufferedReader bf=new BufferedReader(new InputStreamReader(System.in));
      int n=Integer.parseInt(bf.readLine());
      StringBuffer st=new StringBuffer();
      int x=1;
      while(st.length()<=n){st.append(x);x++;}
        
        System.out.println(st.charAt(n-1));
    }
   
       
        
        
   
 
}