class Player:
    def __init__(self, deck):
        self.deck = deck
        self.battlefieldl = []

    def can_play(self):
        return len(self.deck)

    def battlefield(self, playvalue):
        self.battlefieldl = [self.deck.pop(0) for i in range(min(playvalue, 4))]
        return(self.battlefieldl)

    def add_cards(self, battlefield):
        self.deck.extend(battlefield)

def main():
    deck1 = input("Insert the first half of the deck: ")
    deck2 = input("Insert the second half of the deck: ")
    player1 = Player(list(map(int, deck1.split())))
    player2 = Player(list(map(int, deck2.split())))

    isLoser = False
    while not isLoser:
        if player1.can_play() == 0 and player2.can_play() == 0:
            return 0
        elif player1.can_play() == 0:
            return 1
        elif player2.can_play() == 0:
            return 2

        x = min(player1.can_play(), player2.can_play())

        battlefield1 = player1.battlefield(x)
        battlefield2 = player2.battlefield(x)
        while battlefield1[-1] == battlefield2[-1] and player1.can_play() !=0 and player2.can_play() != 0:
            x = min(player1.can_play(), player2.can_play())
            battlefield1.extend(player1.battlefield(x))
            battlefield2.extend(player2.battlefield(x))

        if battlefield1[-1] > battlefield2[-1]:
            player1.add_cards(battlefield1)
            player1.add_cards(battlefield2)
        elif battlefield2[-1] > battlefield1[-1]:
            player2.add_cards(battlefield2)
            player2.add_cards(battlefield1)
        else:
            if player1.can_play() == 0 and player2.can_play() == 0:
                return 0
            elif player1.can_play() == 0:
                return 1
            else:
                return 2

if __name__ == "__main__":
    print(main())