#!/usr/bin/env luajit require("utils") local f = io.open(arg[3]) local fst = tonumber(string.match(f:read("*l"), "Player 1 starting position: (.*)")) - 1 local snd = tonumber(string.match(f:read("*l"), "Player 2 starting position: (.*)")) - 1 f:close() local function index(score1, score2, loc1, loc2) return loc2 + 10 * (loc1 + 30 * (score2 + 30 * score1)) end local function deindex(index) local lo2, loc1, score2, score1 loc2, index = index % 10, math.floor(index / 10) loc1, index = index % 30, math.floor(index / 30) score2, index = index % 30, math.floor(index / 30) score1 = index return score1, score2, loc1, loc2 end local poss = { [index(0, 0, fst, snd)] = 1 } local size = 1 local c1, c2 = 0, 0 while size > 0 do print(size) local newposs = {} size = 0 for i, c in pairs(poss) do local s1, s2, l1, l2 = deindex(i) print(s1, s2, l1, l2, c) if s2 >= 21 then c2 = c2 + c else local i3 = index(s2, s1 + 3, l2, (l1 + 3) % 10); newposs[i3] = (newposs[i3] or 0) + 1 * c local i4 = index(s2, s1 + 4, l2, (l1 + 4) % 10); newposs[i4] = (newposs[i4] or 0) + 3 * c local i5 = index(s2, s1 + 5, l2, (l1 + 5) % 10); newposs[i5] = (newposs[i5] or 0) + 6 * c local i6 = index(s2, s1 + 6, l2, (l1 + 6) % 10); newposs[i6] = (newposs[i6] or 0) + 7 * c local i7 = index(s2, s1 + 7, l2, (l1 + 7) % 10); newposs[i7] = (newposs[i7] or 0) + 6 * c local i8 = index(s2, s1 + 8, l2, (l1 + 8) % 10); newposs[i8] = (newposs[i8] or 0) + 3 * c local i9 = index(s2, s1 + 9, l2, (l1 + 9) % 10); newposs[i9] = (newposs[i9] or 0) + 1 * c size = size + 27 * c end end poss = newposs c1, c2 = c2, c1 end print(c1, c2)