1 files changed, 6 insertions, 3 deletions

diff --git a/day15/__init__.py b/day15/__init__.py
index c22f0c1..5885f37 100644
--- a/day15/__init__.py
+++ b/day15/__init__.py
@@ -4,6 +4,7 @@ from abc import ABC
 from collections import namedtuple
 from dataclasses import dataclass, field
 from typing import Tuple, Iterator, Any, Set, Union
+from typing import Tuple, Iterator, Any, Set, List
 
 from aoc import BaseAssignment
 
@@ -47,7 +48,7 @@ class Sensor:
 
 @dataclass
 class Map:
-    sensors: Set[Sensor] = field(default_factory=set)
+    sensors: List[Sensor] = field(default_factory=list)
     beacons: Set[Coordinate] = field(default_factory=set)
 
     def __post_init__(self):
@@ -80,11 +81,11 @@ class Assignment(BaseAssignment[int, Tuple[Sensor, Coordinate]], ABC):
         return sensor, beacon
 
     def create_map(self, input: Iterator[Tuple[Sensor, Coordinate]]) -> Map:
-        sensors = set()
+        sensors = list()
         beacons = set()
 
         for sensor, beacon in input:
-            sensors.add(sensor)
+            sensors.append(sensor)
             beacons.add(beacon)
 
         return Map(sensors, beacons)
@@ -94,6 +95,8 @@ class AssignmentOne(Assignment):
     example_result = 26
     example_kwargs = {"y": 10}
 
+    # Wrong: 4062163
+
     def run(self, input: Iterator[Tuple[Sensor, Coordinate]], y=2000000):
         map = self.create_map(input)