Problem Statement

Given $N$, print $2^N$.

Constraints

• $0 \\leq N \\leq 30$
• $N$ is an integer.

Input

Input is given from Standard Input in the following format:

$N$

Output

Print the answer.

Sample Input 1

3

Sample Output 1

8

We have $2^3=8$.

Sample Input 2

30

Sample Output 2

1073741824