inp = input()
split_first = inp.split(' ')
Y = int(split_first[0])
M = int(split_first[0])
D = int(split_first[0])


def hantei(Y,M,D):
    if (1989<Y and Y<2019):
        print('Yes')
    elif (Y==1984 and 1<M):
        print('Yes')
    elif (Y==1984 and M==1 and 8<=D):
        print('Yes')
    elif (Y==2019 and M<4):
        print('Yes')
    elif (Y==2019 and M==4 and D<=30):
        print('Yes')
    else:
        print('No')
        
hantei(Y,M,D)