from sys import argv, exit
from blist import blist

try:
    PLAYER_COUNT = int(argv[1])
    LAST_MARBLE = int(argv[2])
except (IndexError, ValueError):
    print(f"Usage: {argv[0]} [player_count] [marble_count]")
    exit(1)

marbles = blist([0, 2, 1])
current_id = 1

scores = [0] * PLAYER_COUNT
player = 2

for next_marble in range(3, LAST_MARBLE + 1):
    if next_marble % 23 == 0:
        current_id = (current_id - 7) % len(marbles)
        scores[player] += next_marble + marbles.pop(current_id)
    else:
        current_id += 2
        if current_id > len(marbles):
            current_id %= len(marbles)

        marbles.insert(current_id, next_marble)

    player = (player + 1) % PLAYER_COUNT

print(max(scores))