From 3b428360df51788eaab05431c422c052460ade31 Mon Sep 17 00:00:00 2001
From: Stefan Harmuth <sharmuth@cocus.com>
Date: Sat, 6 Dec 2025 09:06:56 +0100
Subject: [PATCH] day06 - revised

---
 day06.py | 73 +++++++++++++++++++++++++++-----------------------------
 1 file changed, 35 insertions(+), 38 deletions(-)

diff --git a/day06.py b/day06.py
index 08be9b0..4971cde 100644
--- a/day06.py
+++ b/day06.py
@@ -1,3 +1,5 @@
+from collections import defaultdict
+
 from tools.aoc import AOCDay
 from tools.math import mul
 from typing import Any
@@ -15,53 +17,48 @@ class Day(AOCDay):
         ]
     ]
 
-    def parse_input(self) -> list[tuple[list[int], int]]:
-        p = [l.split() for l in self.getInput()]
-        l = len(p[0])
-        r = []
-        for x in range(l):
-            r.append([y[x] for y in p])
-
-        return [(list(map(int, x[:-1])), x[-1]) for x in r]
-
-
-    def part1(self) -> Any:
-        ans = 0
-        for numbers, op in  self.parse_input():
-            if op == '+':
-                ans += sum(numbers)
-            else:
-                ans += mul(numbers)
-
-        return ans
-
-    def part2(self) -> Any:
+    def parse_input(self, part2: bool = False):
         lines = self.getInput()
         ops = lines[-1].split()
-        l = max(len(x) for x in lines)
-        rotated = []
-        for i in range(l):
-            rotated.append("".join(x[i] if len(x) > i else " " for x in lines[:-1]))
 
-        i = 0
+        ret = defaultdict(list)
+        if not part2:
+            for line in lines[:-1]:
+                for i, num in enumerate(map(int, line.split())):
+                    ret[i].append(num)
+        else:
+            rotated = defaultdict(str)
+            for line in lines[:-1]:
+                for i, c in enumerate(line):
+                    rotated[i] += c
+
+            i = 0
+            for _, line in sorted(rotated.items()):
+                if line.strip():
+                    ret[i].append(int(line))
+                else:
+                    i += 1
+
+        return [x for _, x in sorted(ret.items())], ops
+
+
+    def calc(self, part2: bool = False) -> int:
         ans = 0
-        total = 0 if ops[0] == '+' else 1
-        for n in rotated:
-            if not n.strip():
-                ans += total
-                i += 1
-                total = 0 if ops[i] == '+' else 1
-                continue
-
+        numbers, ops = self.parse_input(part2)
+        for i, nums in enumerate(numbers):
             if ops[i] == '+':
-                total += int(n)
+                ans += sum(nums)
             else:
-                total *= int(n)
-
-        ans += total
+                ans += mul(nums)
 
         return ans
 
+    def part1(self) -> Any:
+        return self.calc()
+
+    def part2(self) -> Any:
+        return self.calc(part2=True)
+
 
 if __name__ == '__main__':
     day = Day(2025, 6)