You are given a $2 ext{D}$ integer array variables where variables[i] $= [a_i, b_i, c_i, m_i]$, and an integer target.

An index i is considered good if it satisfies the following formula:

Now, let’s take a moment to make sure you’ve correctly understood the problem. The quiz below helps you check if you’re solving the correct problem:

We have a game for you to play. Rearrange the logical building blocks to develop a clearer understanding of how to solve this problem.

Implement your solution in the following coding playground.