#!/usr/bin/env python3


def bitmask(mask: str, num: int) -> int:
	binary = bin(num)[2:]
	binary = "0" * (36 - len(binary)) + binary
	res = ""

	for i in range(len(binary)):
		if binary[i] == "1" and mask[i] == "0":
			res += "0"
		elif binary[i] == "0" and mask[i] == "1":
			res += "1"
		else:
			res += binary[i]

	return int(res, 2)


def main() -> None:
	with open("input", "r") as f:
		lines = f.read().splitlines()

	mem: dict[str, int] = {}
	mask = ""
	for line in lines:
		line = line.split(" ")
		if line[0] == "mask":
			mask = line[2]
		else:
			mem[line[0][4:-1]] = bitmask(mask, int(line[2]))

	print(sum(mem[val] for val in mem))


if __name__ == "__main__":
	main()