From 1644c904de1544f788a8e88aa6c52bcd6a625b93 Mon Sep 17 00:00:00 2001
From: Tom van der Lee <t0m.vd.l33@gmail.com>
Date: Wed, 28 Dec 2022 13:31:29 +0100
Subject: Day 21 [WIP]

---
 day21/__init__.py | 122 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 day21/__init__.py

(limited to 'day21/__init__.py')

diff --git a/day21/__init__.py b/day21/__init__.py
new file mode 100644
index 0000000..23fd520
--- /dev/null
+++ b/day21/__init__.py
@@ -0,0 +1,122 @@
+# -*- coding: utf-8 -*-
+from abc import ABC
+from typing import Dict, Union, Iterator, Type, Callable, List
+from operator import add, sub, mul, truediv, eq, floordiv
+
+from aoc import BaseAssignment
+from aoc.decorators import list_input
+from aoc.mixins import AStarMixin
+
+
+class MonkeyActivity:
+    def __init__(self, name: str, monkeys: Dict[str, "MonkeyActivity"]):
+        self.name = name
+        self.monkeys = monkeys
+        self.monkeys[name] = self
+
+    def __repr__(self):
+        return f"{self.name}"
+
+    @property
+    def value(self) -> int:
+        raise NotImplementedError()
+
+
+class Yell(MonkeyActivity):
+    def __init__(self, value: str, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        self._value = int(value)
+
+    @property
+    def value(self) -> int:
+        return self._value
+
+
+class Operate(MonkeyActivity):
+    def __init__(self, a: str, b: str, operator: str, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+        self.operator = operator
+        self._a = a
+        self._b = b
+        self._operator = {
+            "+": add,
+            "-": sub,
+            "*": mul,
+            "/": truediv,
+        }[operator]
+
+    @property
+    def a(self) -> MonkeyActivity:
+        return self.monkeys[self._a]
+
+    @property
+    def b(self) -> MonkeyActivity:
+        return self.monkeys[self._b]
+
+    @property
+    def value(self) -> int:
+        return int(self._operator(self.a.value, self.b.value))
+
+
+class Assignment(BaseAssignment[int, MonkeyActivity], ABC):
+    monkeys = {}
+
+    def parse_item(self, item: str) -> MonkeyActivity:
+        name, activity = item.split(": ")
+        activity = activity.split(" ")
+
+        if len(activity) == 1:
+            return Yell(*activity, name, self.monkeys)
+
+        a, operator, b = activity
+
+        return Operate(a, b, operator, name, self.monkeys)
+
+
+class AssignmentOne(Assignment):
+    example_result = 152
+
+    @list_input
+    def run(self, _: List[MonkeyActivity]) -> int:
+        return self.monkeys["root"].value
+
+
+class AssignmentTwo(Assignment, AStarMixin[MonkeyActivity]):
+    example_result = 301
+
+    @staticmethod
+    def neighbours(node: MonkeyActivity):
+        if isinstance(node, Operate):
+            yield node.a
+            yield node.b
+
+    @list_input
+    def run(self, _: List[MonkeyActivity]) -> int:
+        root = self.monkeys["root"]
+        humn = self.monkeys["humn"]
+        humn._value = 0
+
+        path = self.a_star(
+            root,
+            lambda n, _: n is humn,
+            self.neighbours,
+        )
+
+        for item in path:
+            if isinstance(item, Yell):
+                break
+
+            item: Operate = item
+            reverse_operator = {
+                "+": sub,
+                "-": add,
+                "*": floordiv,
+                "/": mul,
+            }[item.operator]
+
+            humn._value = reverse_operator(item.b.value, item.a.value)
+            pass
+
+        return humn._value
-- 
cgit v1.2.3