Extract Middle Two Elements

Background

In a world full of numbers, you often need to quickly locate key information from a series of data. Now, you need to find the two most central elements from an array.

Problem Description

Given an array of integers of even length, return a new array of length $2$ containing the middle two elements from the original array. The original array will be of length $2$ or more.

Input Format

Input is given from standard input in the following format.

An array of integers, with elements separated by spaces and enclosed in square brackets [].

Output Format

Output is printed to standard output in the following format.

An array of $2$ integers, containing the middle two elements from the original array, with elements separated by a comma and space , and enclosed in square brackets [].

Sample

[1 2 3 4]

[2, 3]

[7 1 2 3 4 9]

[2, 3]

[1 2]

[1, 2]

Sample Explanation

For Sample $1$, the array [1 2 3 4] has a length of $4$. The two middle elements are at indices $1$ and $2$, which are $2$ and $3$. For Sample $2$, the array [7 1 2 3 4 9] has a length of $6$. The two middle elements are at indices $2$ and $3$, which are $2$ and $3$. For Sample $3$, the array [1 2] has a length of $2$. The two middle elements are at indices $0$ and $1$, which are $1$ and $2$.

Constraints

Time limit: $1$ second, Memory limit: $1024$ KiB for each test case.