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 Jun 13 12:15:07 2021

@author: MridulSachdeva
"""


k = int(input())

total = 0
for i in range(1, k+1):
    total += len(str(i))
    if total >= k:
        break
req = total - k
print(str(i)[-1-req])