From 11088124920c7bc8bd1c54c4265e9dcafb7a024b Mon Sep 17 00:00:00 2001
From: Julien Dessaux
Date: Mon, 20 Dec 2021 23:15:56 +0100
Subject: Added solutions for 18th day: snailfish arithmetic

---
 2021/18/second.go | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 2021/18/second.go

(limited to '2021/18/second.go')

diff --git a/2021/18/second.go b/2021/18/second.go
new file mode 100644
index 0000000..6070d74
--- /dev/null
+++ b/2021/18/second.go
@@ -0,0 +1,35 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"git.adyxax.org/aoc/2021/18/pairs"
+)
+
+func main() {
+	max := 0
+	parser := pairs.NewParser(os.Stdin)
+	pairs := make([]*pairs.Pair, 0)
+	for {
+		pair, err := parser.Parse()
+		if err != nil {
+			break
+		}
+		pairs = append(pairs, pair)
+	}
+	l := len(pairs)
+	for i := 0; i < l; i++ {
+		for j := 0; j < l; j++ {
+			if i == j {
+				continue
+			}
+			p1 := pairs[i].DeepCopy()
+			p2 := pairs[j].DeepCopy()
+			if m := p1.Add(p2).Magnitude(); max < m {
+				max = m
+			}
+		}
+	}
+	fmt.Println(max)
+}
-- 
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