From e62e675be22db7b00dbdede1155c9aab8fa1e265 Mon Sep 17 00:00:00 2001
From: Benjamin Kraft <benjamin.kraft@online.de>
Date: Thu, 21 Dec 2023 16:44:10 +0100
Subject: [PATCH] Day 12 Task 1

---
 src/days/12/Day12.cpp | 57 +++++++++++++++++++++++--------------------
 src/days/12/Day12.h   |  1 +
 2 files changed, 32 insertions(+), 26 deletions(-)

diff --git a/src/days/12/Day12.cpp b/src/days/12/Day12.cpp
index cf84bc7..c159362 100644
--- a/src/days/12/Day12.cpp
+++ b/src/days/12/Day12.cpp
@@ -4,47 +4,42 @@ Result Day12::Task1() {
 	uint64 sum = 0;
 
 	for (const auto& [conditions, groups] : parseRecords()){
-		for (const auto& arrangement : allArrangements({conditions, groups})){
-			bool possible = true;
-			for (size_t i = 0; i < arrangement.size(); i++){
-				char cond = conditions[i];
-				bool broken = arrangement[i];
-				if (cond == '.' && broken || cond == '#' && !broken){
-					possible = false;
-					break;
-				}
-			}
-			if (possible)
-				sum++;
+		uint64 localSum = 0;
+		auto arrangements = allArrangements({conditions, groups});
+		for (const auto& arrangement : arrangements){
+			if (matches(conditions, arrangement))
+				localSum++;
+
 		}
+		size_t count = arrangements.size();
+		sum += localSum;
 	}
 
 	return to_string(sum);
 }
 
 Result Day12::Task2() {
-
-
-
 	uint64 sum = 0;
 
-	for (auto[conditions, groups] : parseRecords()){
+	size_t index = 0;
 
+	for (auto& [conditions, groups] : parseRecords()){
+		auto condCopy = conditions;
+		auto groupsCopy = groups;
+		for (size_t i = 0; i < 4; i++){
+			conditions += "?" + condCopy;
+			groups.insert(groups.end(), groupsCopy.begin(), groupsCopy.end());
+		}
 		for (const auto& arrangement : allArrangements({conditions, groups})){
-			bool possible = true;
-			for (size_t i = 0; i < arrangement.size(); i++){
-				char cond = conditions[i];
-				bool broken = arrangement[i];
-				if (cond == '.' && broken || cond == '#' && !broken){
-					possible = false;
-					break;
-				}
-			}
-			if (possible)
+			if (matches(conditions, arrangement))
 				sum++;
 		}
+
+
+		cout << index++ << endl;
 	}
 
+
 	return to_string(sum);
 }
 
@@ -98,3 +93,13 @@ vector<Day12::Arrangement> Day12::allArrangements(const Day12::Record &record) {
 
 	return arrangements;
 }
+
+bool Day12::matches(const string &conditions, const Day12::Arrangement &arrangement) {
+	for (size_t i = 0; i < arrangement.size(); i++){
+		char cond = conditions[i];
+		bool broken = arrangement[i];
+		if (cond == '.' && broken || cond == '#' && !broken)
+			return false;
+	}
+	return true;
+}
diff --git a/src/days/12/Day12.h b/src/days/12/Day12.h
index d24bff4..8e06db9 100644
--- a/src/days/12/Day12.h
+++ b/src/days/12/Day12.h
@@ -7,6 +7,7 @@ class Day12 : public Day {
 	typedef vector<bool> Arrangement;
 	vector<Record> parseRecords() const;
 	static vector<Arrangement> allArrangements(const Record &record);
+	static bool matches(const string& conditions, const Arrangement& arrangement);
 protected:
 	Result Task1() override;