Task

Standard input consists of two integers, one per line: the first is an initial rabbit population, and the second is a number of years.

Write a Python script named rabbits$-$everywhere.py which outputs the final rabbit population after the indicated number of years.

Example standard input

$100$

$3$

Example standard output

$800$

Explanation

Initially there are

$100$

rabbits.

After

$3$

years there are

$800$

rabbits.