From ff4b7b281cd2ce97c027b65994fa33a62b294841 Mon Sep 17 00:00:00 2001
From: Kharec <sandro@cazzaniga.fr>
Date: Fri, 28 Nov 2025 17:59:03 +0100
Subject: [PATCH] feat: add p2 solution

---
 internal/2015/DayThree/code.go | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/internal/2015/DayThree/code.go b/internal/2015/DayThree/code.go
index 966eb97..b1a4190 100644
--- a/internal/2015/DayThree/code.go
+++ b/internal/2015/DayThree/code.go
@@ -39,5 +39,30 @@ func PartOne(data string) int {
 }
 
 func PartTwo(data string) int {
-	return 0
+	houses := make(map[coordinates]int)
+	santaX, santaY := 0, 0
+	robotX, robotY := 0, 0
+	houses[coordinates{0, 0}] = 2
+
+	for idx, direction := range data {
+		var x, y *int
+		if idx%2 == 0 {
+			x, y = &santaX, &santaY
+		} else {
+			x, y = &robotX, &robotY
+		}
+
+		switch direction {
+		case '>':
+			*x++
+		case '<':
+			*x--
+		case '^':
+			*y++
+		case 'v':
+			*y--
+		}
+		houses[coordinates{*x, *y}]++
+	}
+	return len(houses)
 }