import re
from collections import deque

with open('9.txt', 'r') as file:
    data = file.readline()
    m = re.match(r'(\d+)\D+(\d+)', data)
    players, last_marble = int(m[1]), int(m[2])


PLAYER_NUM = players
LAST_MARBLE = last_marble * 100

marbles = deque([0])
scores = [0] * PLAYER_NUM

for marble in range(1, LAST_MARBLE+1):
    if marble % 23 == 0:
        marbles.rotate(7)
        scores[marble % PLAYER_NUM] += marble + marbles.pop()
        marbles.rotate(-1)
    else:
        marbles.rotate(-1)
        marbles.append(marble)

# print(marbles)
# print(players)
print(max(scores))