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
# -*- coding: utf-8 -*-
"""
Created on Sun Aug 30 02:21:13 2020

@author: Dark Soul
"""

k=int(input(''))
sol=''
cnt=0
for i in range(1,10000):
    sol+=str(i)
    cnt+=len(str(i))
    if cnt>=k:
        break
print(int(sol[k-1]))
    
