Add solution to 2024-12-03

Author: fuglede

2024/day03/solutions.py

@@ -0,0 +1,25 @@
+import re
+
+with open("input") as f:
+    data = f.read()
+
+
+def solve(part1):
+    res = 0
+    do = True
+    for i, j, k in re.findall("(mul\((\d+),(\d+)\)|do\(\)|don't\(\))", data):
+        if i == "don't()":
+            do = False
+        elif i == "do()":
+            do = True
+        else:
+            if do or part1:
+                res += int(j) * int(k)
+    return res
+
+
+# Part 1
+print(solve(True))
+
+# Part 2
+print(solve(False))