Daily Coding Problem: Problem #893 [Medium]

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

This problem was asked by Facebook.

A builder is looking to build a row of N houses that can be of K different colors. He has a goal of minimizing cost while ensuring that no two neighboring houses are of the same color.

Given an N by K matrix where the n^th row and k^th column represents the cost to build the n^th house with k^th color, return the minimum cost which achieves this goal.

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