Can You Exponentiate?

Given two natural numbers $a$ and $b$, find the last (least significant) digit of $a^b$.

Write a program that:

• reads the base $a$ and the exponent $b$,
• computes the last digit of $a^b$,
• prints the result.

The first and only line contains two integers $a$ and $b$ separated by a single space ($1 \le a, b \le 10^{9}$).

Print only the last (least significant) digit of $a^b$ written in decimal.