Daily Coding Problem: Problem #1410 [Hard]

Good morning! Here's your coding interview problem for today.

This problem was asked by Salesforce.

Connect 4 is a game where opponents take turns dropping red or black discs into a 7 x 6 vertically suspended grid. The game ends either when one player creates a line of four consecutive discs of their color (horizontally, vertically, or diagonally), or when there are no more spots left in the grid.

Design and implement Connect 4.

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