2021-12-02 12:43:26 +01:00
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#!/usr/bin/env lua
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aim = 0
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h = 0
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v = 0
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function down(val) aim = aim + val end
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function up(val) aim = aim - val end
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function forward(val) h = h + val; v = v + aim * val end
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for line in io.lines("input.txt") do
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2021-12-02 19:15:36 +01:00
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cmd, val = string.match(line, "(%S+) (%S+)")
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2021-12-02 12:43:26 +01:00
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_G[cmd](val)
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end
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2021-12-02 19:15:36 +01:00
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print(string.format("Answer: %d", h * v))
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