#!/usr/bin/env python3.11
import re

input_file = "input.txt"
sum = 0
with open(input_file) as input:
    while line := input.readline():
        if match := re.match("Card +(\d+): (.*) \| (.*)", line):
            winning_numbers = list(map(int, re.split(" +", match.group(2).lstrip(" "))))
            numbers = map(int, re.split(" +", match.group(3).lstrip(" ")))
            # print(match.group(1), winning_numbers, numbers)
            points = 0
            # print(winning_numbers, end="; ")
            for number in numbers:
                # print(number, end=",")
                if number in winning_numbers:
                    # print("is winning", end="; ")
                    if points == 0:
                        points = 1
                    else:
                        points *= 2
                else:
                    # print("is not winning", end="; ")
                    pass
            # print("\n", points)
            sum += points
print(sum)