Background

Description

Given a list of integers, return a list where each integer is multiplied by 2.

Format

Input

Output

Samples

[1 2 3]

[2, 4, 6]

[6 8 6 8 -1]

[12, 16, 12, 16, -2]

[]

[]

Limitation

1s, 1024KiB for each test case.