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- #!/usr/bin/ruby
- # Author: Daniel "Trizen" Șuteu
- # License: GPLv3
- # Website: https://github.com/trizen
- # https://projecteuler.net/problem=81
- # usage: sidef problem_081.sf < p081_matrix.txt
- var matrix = []
- ARGF.each { |line|
- matrix << line.trim.split(',').map{.to_n}
- }
- var end = matrix.end
- func path(i, j) is cached {
- var paths = []
- if (i < end) {
- paths << path(i+1, j)
- }
- if (j < end) {
- paths << path(i, j+1)
- }
- matrix[i][j] + (paths.min \\ 0)
- }
- say path(0, 0)
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