1513: 计算2的幂

Memory Limit:128 MB Time Limit:1.000 S
Judge Style:Text Compare Creator:
Submit:45 Solved:15

Description

给定非负整数n,求2n的值,即2n次方。

Input

输入一个整数n0 ≤ n <31

Output

一个整数,即2n次方。

Sample Input Copy

3

Sample Output Copy

8

Source/Category