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author | Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com> | 2020-12-25 15:26:01 +0100 |
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committer | Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com> | 2020-12-25 15:26:01 +0100 |
commit | 5a28775f19a8a48b67fc41e048c2a3958afa1e42 (patch) | |
tree | 8cababf438ee509ccb51a2023430891876cc2d88 /10/b.rb | |
parent | 15c6d8d79d9ec00a7abb14f90bd65547893c76f2 (diff) |
Add day 10
Diffstat (limited to '10/b.rb')
-rw-r--r-- | 10/b.rb | 7 |
1 files changed, 7 insertions, 0 deletions
@@ -0,0 +1,7 @@ +lines = File.readlines('input.txt').map { |l| l.to_i }.unshift(0).sort! +arrs = Hash.new 0 +arrs[0] = 1 +lines.slice(1, lines.size).each do |line| + arrs[line] += arrs[line - 1] + arrs[line - 2] + arrs[line - 3] +end +puts arrs[lines.last] |