from functools import lru_cache

inpt = open("input.txt").read().split('\n')

@lru_cache()
def get_public_key(subject_num, loop_size, num = 1):
    if loop_size < 1:
        return num
    return get_public_key(subject_num, loop_size-1, (num * subject_num) % 20201227)

def do_stuff(subject_num, loop_size):
    num=1
    for i in range(loop_size):
        num = (num * subject_num) % 20201227
    return num

card_public = int(inpt[0])
door_public = int(inpt[1])

card_loop = -1
door_loop = -1

card_test = 1
door_test = 1

# for card in range(499):
#     if get_public_key(7, card+1) == card_public:
#         card_loop = card+1
#         break
#
# for door in range(499):
#     if get_public_key(7, door+1) == door_public:
#         door_loop = door + 1
#         break

for card in range(100000000000):
    card_test = (card_test * 7) % 20201227
    if card_test == card_public:
        card_loop = card + 1
        break

for door in range(100000000000):
    door_test = (door_test * 7) % 20201227
    if door_test == door_public:
        door_loop = door + 1
        break


# 14640514 - card, 16754596 - door
assert card_loop != -1 and door_loop != -1

print(do_stuff(do_stuff(7, card_loop), door_loop))