Background

Special for beginners, ^_^

digit Function

Problem Description

Define a function $digit(n, k)$ in the program that extracts the $k$-th digit of the integer $n$ counting from the right.

Input Format

A positive integer $n$ and an integer $k$.

Output Format

The value of $digit(n, k)$.

Sample Input

31859 3

Sample Output

8

Constraints

1s, 1024KiB for each test case.