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73 lines
3.9 KiB
73 lines
3.9 KiB
9 years ago
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regex = /(\w+) would (\w+) (\d+) happiness units by sitting next to (\w+)/
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9 years ago
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happiness = Hash.new {|h,k| h[k] = Hash.new(0) }
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9 years ago
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DATA.read.scan(regex).each do |left, sign, units, right|
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units = units.to_i
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units *= (sign == "gain") ? 1 : -1
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happiness[left][right] = units
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end
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9 years ago
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happiness["Alpha"] = Hash.new(0)
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9 years ago
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puts happiness.keys.permutation.map { |arrangement|
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arrangement << arrangement.first
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arrangement.each_cons(2).map { |left,right|
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happiness[left][right] + happiness[right][left]
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}.inject(:+)
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}.max
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__END__
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Alice would lose 57 happiness units by sitting next to Bob.
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Alice would lose 62 happiness units by sitting next to Carol.
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Alice would lose 75 happiness units by sitting next to David.
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Alice would gain 71 happiness units by sitting next to Eric.
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Alice would lose 22 happiness units by sitting next to Frank.
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Alice would lose 23 happiness units by sitting next to George.
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Alice would lose 76 happiness units by sitting next to Mallory.
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Bob would lose 14 happiness units by sitting next to Alice.
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Bob would gain 48 happiness units by sitting next to Carol.
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Bob would gain 89 happiness units by sitting next to David.
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Bob would gain 86 happiness units by sitting next to Eric.
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Bob would lose 2 happiness units by sitting next to Frank.
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Bob would gain 27 happiness units by sitting next to George.
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Bob would gain 19 happiness units by sitting next to Mallory.
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Carol would gain 37 happiness units by sitting next to Alice.
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Carol would gain 45 happiness units by sitting next to Bob.
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Carol would gain 24 happiness units by sitting next to David.
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Carol would gain 5 happiness units by sitting next to Eric.
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Carol would lose 68 happiness units by sitting next to Frank.
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Carol would lose 25 happiness units by sitting next to George.
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Carol would gain 30 happiness units by sitting next to Mallory.
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David would lose 51 happiness units by sitting next to Alice.
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David would gain 34 happiness units by sitting next to Bob.
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David would gain 99 happiness units by sitting next to Carol.
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David would gain 91 happiness units by sitting next to Eric.
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David would lose 38 happiness units by sitting next to Frank.
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David would gain 60 happiness units by sitting next to George.
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David would lose 63 happiness units by sitting next to Mallory.
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Eric would gain 23 happiness units by sitting next to Alice.
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Eric would lose 69 happiness units by sitting next to Bob.
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Eric would lose 33 happiness units by sitting next to Carol.
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Eric would lose 47 happiness units by sitting next to David.
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Eric would gain 75 happiness units by sitting next to Frank.
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Eric would gain 82 happiness units by sitting next to George.
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Eric would gain 13 happiness units by sitting next to Mallory.
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Frank would gain 77 happiness units by sitting next to Alice.
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Frank would gain 27 happiness units by sitting next to Bob.
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Frank would lose 87 happiness units by sitting next to Carol.
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Frank would gain 74 happiness units by sitting next to David.
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Frank would lose 41 happiness units by sitting next to Eric.
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Frank would lose 99 happiness units by sitting next to George.
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Frank would gain 26 happiness units by sitting next to Mallory.
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George would lose 63 happiness units by sitting next to Alice.
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George would lose 51 happiness units by sitting next to Bob.
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George would lose 60 happiness units by sitting next to Carol.
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George would gain 30 happiness units by sitting next to David.
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George would lose 100 happiness units by sitting next to Eric.
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George would lose 63 happiness units by sitting next to Frank.
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George would gain 57 happiness units by sitting next to Mallory.
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Mallory would lose 71 happiness units by sitting next to Alice.
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Mallory would lose 28 happiness units by sitting next to Bob.
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Mallory would lose 10 happiness units by sitting next to Carol.
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Mallory would gain 44 happiness units by sitting next to David.
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Mallory would gain 22 happiness units by sitting next to Eric.
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Mallory would gain 79 happiness units by sitting next to Frank.
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Mallory would lose 16 happiness units by sitting next to George.
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