27 lines
939 B
Ruby
27 lines
939 B
Ruby
triangle =
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" 55
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94 48
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95 30 96
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77 71 26 67
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97 13 76 38 45
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07 36 79 16 37 68
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48 07 09 18 70 26 06
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18 72 79 46 59 79 29 90
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20 76 87 11 32 07 07 49 18
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27 83 58 35 71 11 25 57 29 85
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14 64 36 96 27 11 58 56 92 18 55
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02 90 03 60 48 49 41 46 33 36 47 23
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92 50 48 02 36 59 42 79 72 20 82 77 42
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56 78 38 80 39 75 02 71 66 66 01 03 55 72
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44 25 67 84 71 67 11 61 40 57 58 89 40 56 36
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85 32 25 85 57 48 84 35 47 62 17 01 01 99 89 52
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06 71 28 75 94 48 37 10 23 51 06 48 53 18 74 98 15
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27 02 92 23 08 71 76 84 15 52 92 63 81 10 44 10 69 93"
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ar = triangle.each_line.map{|line| line.split.map(&:to_i)}
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puts ar.inject([]){|res,x|
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maxes = [0, *res, 0].each_cons(2).map(&:max)
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x.zip(maxes).map{|a,b| a+b}
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}.max
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# => 1320
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