Day 3 in zig; skipped day 2 in zig for now

rust/2/sampleinput.txt

@@ -1,6 +1,4 @@
-A X draw = 1 + 3 = 4. Also my parsing just takes the 1st and 3rd characters of
-the lines so I can type anything else after that and it'll work as an input
-file kek
+A X draw = 1 + 3 = 4
 A Y win  = 2 + 6 = 8
 A Z loss = 3 + 0 = 3 <- not 9
 B X loss = 1 + 0 = 1