2015 day 12, 13 & 14.

src/holt59/aoc/2015/day12.py

@@ -0,0 +1,27 @@
+import json
+import sys
+from typing import TypeAlias
+
+JsonObject: TypeAlias = dict[str, "JsonObject"] | list["JsonObject"] | int | str
+
+
+def json_sum(value: JsonObject, ignore: str | None = None) -> int:
+    if isinstance(value, str):
+        return 0
+    elif isinstance(value, int):
+        return value
+    elif isinstance(value, list):
+        return sum(json_sum(v, ignore=ignore) for v in value)
+    elif ignore not in value.values():
+        return sum(json_sum(v, ignore=ignore) for v in value.values())
+    else:
+        return 0
+
+
+data: JsonObject = json.load(sys.stdin)
+
+answer_1 = json_sum(data)
+print(f"answer 1 is {answer_1}")
+
+answer_2 = json_sum(data, "red")
+print(f"answer 2 is {answer_2}")