17 lines
314 B
Lua
17 lines
314 B
Lua
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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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cmd, val = line:gmatch("(%S+) (%S+)")()
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_G[cmd](val)
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end
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print(("Answer: %d"):format(h * v))
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