Day 5.

05.py

@@ -0,0 +1,12 @@
+def execute(instructions, incrementor, position=0):
+    while 0 <= position < len(instructions):
+        next_position = position + instructions[position]
+        instructions[position] += incrementor(instructions[position])
+        position = next_position
+        yield position
+
+
+with open('data/05.txt', 'r') as file:
+    instructions = list(map(int, file.readlines()))
+    print(f'Part one: {sum(1 for _ in execute(list(instructions), lambda x: 1))}')
+    print(f'Part two: {sum(1 for _ in execute(list(instructions), lambda x: -1 if x >= 3 else 1))}')