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

if (Y < 1989) or (2019 < Y) or ((Y==1989) and (D<8))or((Y==2019) and (4<M)):
    print('No')
else:
    print('Yes')
        
hantei(Y,M,D)