2021-12-05 12:17:39 +01:00
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#!/usr/bin/env luajit
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2021-12-02 08:21:18 +01:00
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local position, depth, aim = 0, 0, 0
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for line in io.lines(arg[3]) do
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local split = line:find(" ")
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local direction = line:sub(1, split - 1)
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local value = line:sub(split + 1, -1)
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if direction == "forward" then
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position = position + value
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depth = depth + aim * value
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elseif direction == "up" then
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aim = aim - value
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else
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aim = aim + value
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end
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end
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print(depth * position)
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