strs = input()
str_list = strs.split(' ')
num_list = [int(i) for i in str_list]


heisei=False

if num_list[0] > 1989 and num_list[0] < 2019:
    heisei = True
elif num_list[0] == 1989 and (num_list[1] >= 2 or (num_list[1] == 1 and num_list[2] >= 8)):
    heisei = True
elif num_list[0] == 2019 and num_list[1] <= 4:
    heisei = True

if heisei == True:
    print("Yes")
else:
    print("No")