Background

Description

Given 2 int arrays, each length 2, return a new array length 4 containing all their elements.

Format

Input

Output

Samples

[1 2] [3 4]

[1, 2, 3, 4]

[4 4] [2 2]

[4, 4, 2, 2]

[9 2] [3 4]

[9, 2, 3, 4]

Limitation

1s, 1024KiB for each test case.