Pathfinding

Project Euler 83: Find the minimal path sum from the top left to the bottom right by moving left, right, up, and down.

Project Euler 83: Find the minimal path sum from the top left to the bottom right by moving left, right, up, and down.

Problem 83 of Project Euler is the natural continuation of Problem 81 and 82 which we have already solved. The problem reads

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.

131 673 234 103 18
201 96 342 965 150
630 803 746 422 111
537 699 497 121 956
805 732 524 37 331

Find the minimal path sum, in matrix.txt (right click and ‘Save Link/Target As…’), a 31K text file containing a 80 by 80 matrix, from the top left to the bottom right by moving left, right, up, and down.

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Posted by Kristian in Project Euler, 11 comments