Added solutions for 16th day: Packet Decoder

2021/16/first.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+
+	"git.adyxax.org/aoc/2021/16/bits"
+)
+
+var (
+	score = 0
+)
+
+func computeScore(b *bits.Bits) {
+	score += int(b.Version)
+	for _, sub := range b.Operators {
+		computeScore(sub)
+	}
+}
+
+func main() {
+	scanner := bits.NewScanner(bufio.NewReader(os.Stdin))
+	for {
+		b := scanner.Scan()
+		fmt.Println(b)
+		if b == nil {
+			break
+		}
+		computeScore(b)
+	}
+	fmt.Println(score)
+}