Day 8 part 1 solution.

2018/day08-1.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"fmt"
+
+	"internal/day08"
+	"internal/util"
+)
+
+func main() {
+	data := util.ReadInputInts()
+	root := day08.BuildTree(data)
+	fmt.Println(sumMetadata(root))
+}
+
+func sumMetadata(node *day08.Node) int {
+	sum := 0
+	for _, v := range node.Metadata {
+		sum += v
+	}
+
+	for _, child := range node.Children {
+		sum += sumMetadata(child)
+	}
+
+	return sum
+}