day 21 part 1
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day21/part1.lua
Executable file
26
day21/part1.lua
Executable file
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#!/usr/bin/env luajit
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require("utils")
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local f = io.open(arg[3])
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local fst = string.match(f:read("*l"), "Player 1 starting position: (.*)")
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local snd = string.match(f:read("*l"), "Player 2 starting position: (.*)")
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f:close()
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function rolls()
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local i = 0
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return function()
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i = i + 1
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return i
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end
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end
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local r = rolls()
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local turn = 0
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local fstscore, sndscore = 0, 0
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repeat
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snd, fst = (fst + r() + r() + r() - 1) % 10 + 1, snd
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sndscore, fstscore = fstscore + snd, sndscore
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turn = turn + 3
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until sndscore >= 1000
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print(fstscore, turn, fstscore * turn)
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