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(1,13):
    inc=9*(10**(i-1))*i
    if cnt+inc>=k:
        break
    else:
        cnt+=inc
lft=k-cnt
dig=(lft)/i
if dig!=int(dig):
    dig=int(dig+1)
else:
    dig=int(dig)
num=(10**(i-1))+dig-1
left=k-(cnt+dig*i)
sol=str(num)
print(sol[left-1])

    
