#!/usr/bin/env python3

lines = (x.strip() for x in open("input.txt"))

init_stats = [[], []]
player2 = False
for line in lines:
    if line.startswith("Player"):
        continue
    elif line == "":
        player2 = True
    else:
        init_stats[1 if player2 else 0].append(int(line))

def play_game(stats):
    done = set()
    while all(len(x) > 0 for x in stats):
        state = (*stats[0], "+", *stats[1])
        if state in done:
            return True, state
        done.add(state)
        a, b = stats[0].pop(0), stats[1].pop(0)
        if len(stats[0]) >= a and len(stats[1]) >= b:
            winner = play_game([stats[0][:a], stats[1][:b]])[0]
        else:
            winner = a > b
        if winner:
            stats[0].extend((a, b))
        else:
            stats[1].extend((b, a))
    return len(stats[0]) > 0, stats

winner, out_stats = play_game(init_stats)

print(list(map(lambda x: sum(i*v for i, v in zip(x, range(len(x), 0, -1))), out_stats))[0 if winner else 1])