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10 lines
298 B
10 lines
298 B
3 years ago
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positions = ARGF.read.split(?,).map(&:to_i)
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min, max = positions.minmax
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pos = (min..max).min_by {|i|
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# positions.sum {|p| (p - i).abs }
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positions.sum {|p| n = (p - i).abs; (n * (n + 1)) / 2 }
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}
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# p positions.sum {|p| (p - pos).abs }
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p positions.sum {|p| n = (p - pos).abs; (n * (n + 1)) / 2 }
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