title: What is the greatest product of four adjacent numbers on the same straight line in the 20 by 20 grid?
url: http://projecteuler.net/problem=11

desc: |
  In the 2020 grid below, four numbers along a diagonal line have been marked in red.
  What is the greatest product of four adjacent numbers in any direction (up, down, left, right, or diagonally) in the 2020 grid?
  (See file input)
 
solution: |
  Bruteforce (Unless someone found a smarter way)

solutions:
  solve.php:
    desc: Expects the matrix as stdin
    language: php
    parameters: < ProjectEuler\011\input
  solve.rb:
    desc: Expects the matrix as stdin
    language: ruby
    parameters: < ProjectEuler\011\input