13 lines
217 B
Ruby
13 lines
217 B
Ruby
# frozen_string_literal: true
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input = File.readlines './input'
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width = input.first.strip.size
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count = 0
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input.each_with_index do |row, i|
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next if i == 0
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count += 1 if row[(i * 3) % width] == '#'
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end
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puts count
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