import random, datetime
ssid = "{}{:02d}{}".format(*[x for x in ['{:%y%m%d}'.format(datetime.datetime(random.randint(1940, 2000), random.randint(1, 12), random.randint(1, 27))), random.randint(0, 99), random.randint(0, 9)]])
print("{}{}".format(ssid, (10 - (sum(map(lambda x: x%10 + int(x/10), map(lambda x,y: x*y, map(int, ssid), [2,1]*4 + [2]))) % 10)) % 10))