Rob Pickerill robpickerill

## adventofcode-day3-problem2.py
from typing import List, Tuple
from enum import Enum

class Gas(Enum):
    O2 = 1
    CO2 = 2


def input() -> List[str]:
    with open("input", "r") as f:
	from typing import List, Tuple
	from enum import Enum

	class Gas(Enum):
	O2 = 1
	CO2 = 2


	def input() -> List[str]:
	with open("input", "r") as f: