From 7d7581dff9faf8cd4989ce37dfc373bf033d1019 Mon Sep 17 00:00:00 2001 From: Felix Van der Jeugt Date: Tue, 21 Dec 2021 08:26:42 +0100 Subject: [PATCH] day 21 part 1 --- day21/part1.lua | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100755 day21/part1.lua diff --git a/day21/part1.lua b/day21/part1.lua new file mode 100755 index 0000000..8b7ac84 --- /dev/null +++ b/day21/part1.lua @@ -0,0 +1,26 @@ +#!/usr/bin/env luajit +require("utils") + +local f = io.open(arg[3]) +local fst = string.match(f:read("*l"), "Player 1 starting position: (.*)") +local snd = string.match(f:read("*l"), "Player 2 starting position: (.*)") +f:close() + +function rolls() + local i = 0 + return function() + i = i + 1 + return i + end +end + +local r = rolls() +local turn = 0 +local fstscore, sndscore = 0, 0 +repeat + snd, fst = (fst + r() + r() + r() - 1) % 10 + 1, snd + sndscore, fstscore = fstscore + snd, sndscore + turn = turn + 3 +until sndscore >= 1000 + +print(fstscore, turn, fstscore * turn)