Optimize day 4 enough to run

2024/bonus/day04/check_point/check_xmas/main.tf

@@ -19,9 +19,9 @@ variable "dy" {
 }
 
 locals {
-  match = [for i in range(4) : var.x + i * var.dx >= 0 && try(substr(var.grid[var.y + i * var.dy], var.x + i * var.dx, 1), "F") == substr("XMAS", i, 1)]
+  word = join("", [for i in range(4) : var.x + i * var.dx >= 0 ? try(substr(var.grid[var.y + i * var.dy], var.x + i * var.dx, 1), "F") : "F"])
 }
 
 output "found" {
-  value = alltrue(local.match) ? 1 : 0
+  value = contains(["SAMX", "XMAS"], local.word) ? 1 : 0
 }

2024/bonus/day04/check_point/main.tf

@@ -19,9 +19,6 @@ locals {
   y = floor(var.index / var.width)
 
   directions = {
-    "UL" = [-1, -1]
-    "U"  = [0, -1]
-    "UR" = [1, -1]
     "DL" = [-1, 1]
     "D"  = [0, 1]
     "DR" = [1, 1]

2024/bonus/main.tf

@@ -41,8 +41,18 @@ output "day03_2" {
   value = module.day03.part2
 }
 
-# Don't run this, it runs out of memory
+# Don't run this, it runs forever (6 minutes) and requires a lot of memory (~5.5GB) to execute to
+# boot. Trust me, it works.
+
 # module "day04" {
 #   source = "./day04"
 #   input  = file("../inputs/04.txt")
 # }
+
+# output "day04_1" {
+#   value = module.day04.part1
+# }
+
+# output "day04_2" {
+#   value = module.day04.part2
+# }