Bacteria Growth

You are given an initial number of bacteria and a number of hours. The bacteria double in number each hour. Your task is to calculate the total number of bacteria present after the given number of hours.

Mathematically, if the initial count is n and the number of hours is t, then the total bacteria count is given by:

$$n \times 2^t$$

For example, if you start with 5 bacteria and let them grow for 3 hours, the result is

$$5 \times 2^3 = 40$$

inputFormat

The input consists of a single line with two integers separated by space. The first integer represents the initial number of bacteria (n), and the second integer represents the number of hours (t).

outputFormat

Output the total number of bacteria after t hours.

5 3

40