1 files changed, 40 insertions, 0 deletions

diff --git a/day5/__init__.py b/day5/__init__.py
new file mode 100644
index 0000000..405b589
--- /dev/null
+++ b/day5/__init__.py
@@ -0,0 +1,40 @@
+from math import ceil, floor
+from typing import Iterator, Any
+
+from aoc import BaseAssignment
+
+
+class Assignment(BaseAssignment):
+    def parse_item(self, item: str) -> Any:
+        row = self.calculate_postition(input=item[:7], min=0, max=127)
+        col = self.calculate_postition(input=item[7:], min=0, max=7)
+        return (row * 8) + col
+
+    def calculate_postition(self, input: str, min: int, max: int) -> int:
+        input_length = len(input)
+        action = input[0]
+        half = (max - min) / 2
+        if action in ['F', 'L']:
+            return min \
+                if input_length == 1 \
+                else self.calculate_postition(input[1:], min=min,
+                                              max=floor(max - half))
+        elif action in ['B', 'R']:
+            return max \
+                if input_length == 1 \
+                else self.calculate_postition(input[1:], min=ceil(min + half),
+                                              max=max)
+
+
+class AssignmentOne(Assignment):
+    def run(self, input: Iterator) -> Any:
+        return max(*input)
+
+
+class AssignmentTwo(Assignment):
+    def run(self, input: Iterator) -> Any:
+        seat_ids = sorted(input)
+        for index, id in enumerate(seat_ids):
+            next_id = id + 1
+            if id + 1 != seat_ids[index + 1]:
+                return next_id