Problem 83: Path sum: four ways

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Note: This problem is a significantly more challenging version of Problem 81.

In the 5 by 5 matrix below, the minimal path sum from the top left to the bottom right, by moving left, right, up, and down, is indicated in bold red and is equal to 2297.

$\begin{pmatrix} \color{red}{131} & 673 & \color{red}{234} & \color{red}{103} & \color{red}{18}\\\\ \color{red}{201} & \color{red}{96} & \color{red}{342} & 965 & \color{red}{150}\\\\ 630 & 803 & 746 & \color{red}{422} & \color{red}{111}\\\\ 537 & 699 & 497 & \color{red}{121} & 956\\\\ 805 & 732 & 524 & \color{red}{37} & \color{red}{331} \end{pmatrix}$

Find the minimal path sum from the top left to the bottom right by moving left, right, up, and down in matrix, a 2D array defined in the background, containing an 80 by 80 matrix.