From ed395fe7a7fd68f6db4ea94de8fdcdcb0fac5179 Mon Sep 17 00:00:00 2001
From: bthink <bthink@fake.com>
Date: Sun, 7 Dec 2025 15:59:37 +0100
Subject: first week of AOC 2025

---
 2025/aoc2025-d06.py | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 2025/aoc2025-d06.py

(limited to '2025/aoc2025-d06.py')

diff --git a/2025/aoc2025-d06.py b/2025/aoc2025-d06.py
new file mode 100644
index 0000000..864cb90
--- /dev/null
+++ b/2025/aoc2025-d06.py
@@ -0,0 +1,54 @@
+#advent of code 2025
+#day 06
+import re
+
+def calculate(values,op):
+	if op=="+":
+		answer=sum(values);
+	elif op=="*":
+		answer=1;
+		for value in values:
+			answer*=value;
+	return answer;
+
+part1=0;
+part2=0;
+PuzzleInput=open("06.in","r");
+problems=dict();
+biggerproblems=dict();
+operators=[];
+for y,line in enumerate(PuzzleInput):
+	line=line.replace("\n","");
+	vals=re.findall(r'(\d+|\*|\+)', line);
+	if y==0: #reserve space for each column
+		for n in range(len(vals)):
+			problems[n]=[];
+		for n in range(len(line)):
+			biggerproblems[n]=[];
+	for x,val in enumerate(vals):
+		problems[x].append(val);
+	if vals.count("+")+vals.count("*")==0:
+		for x,c in enumerate(line):
+			biggerproblems[x].append(c);
+	else:
+		operators=[op for op in vals];
+PuzzleInput.close();
+#part 1
+for n in problems:
+	problems[n]=[[int(num) for num in problems[n][:-1]],problems[n][-1]];
+	part1+=calculate(*problems[n]);
+#part 2
+subproblem=[];
+for n in biggerproblems:
+	problemline=biggerproblems[n];
+	if problemline.count(" ")==len(problemline):
+		operation=operators.pop(0);
+		part2+=calculate(subproblem,operation);
+		subproblem=[];
+		continue;
+	subproblem.append(int("".join(problemline)));
+#last column doesn't have it's own whitespace so it's outside the loop
+operation=operators.pop(0);
+part2+=calculate(subproblem,operation);
+print("part 1",part1);
+print("part 2",part2);
-- 
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