Day 2

day2/init.lua

@@ -0,0 +1,40 @@
+local file = io.open("input.txt")
+local round_line = file:read("*l")
+local old_score = 0
+local new_score = 0
+
+local old_possible_outcomes = {
+    ["B Z"] = 9,
+    ["A Y"] = 8,
+    ["C X"] = 7,
+    ["C Z"] = 6,
+    ["B Y"] = 5,
+    ["A X"] = 4,
+    ["A Z"] = 3,
+    ["C Y"] = 2,
+    ["B X"] = 1,
+}
+
+local new_possible_outcomes = {
+    ["B Z"] = 9,
+    ["A Z"] = 8,
+    ["C Z"] = 7,
+    
+    ["B Y"] = 5,
+    ["A Y"] = 4,
+    ["C Y"] = 6,
+
+    ["B X"] = 1,
+    ["A X"] = 3,
+    ["C X"] = 2,
+}
+
+while round_line do
+    old_score = old_score + old_possible_outcomes[round_line]
+    new_score = new_score + new_possible_outcomes[round_line]
+
+    round_line = file:read("*l")
+end
+
+print(old_score)
+print(new_score)