nums = input()
data = map(int, nums.spit(' '))

if 1989 <= data[0] <= 2019:
    if data[0] == 1989:
        if data[1] == 1:
            if data[2] >= 8:
                print('Yes')
            else:
                print('No')
        else:
            print('Yes')
    elif data[0] == 2019:
        if data[0] <= 4:
            print('Yes')
        else:
            print('No')
    else:
        print('Yes')
else:
    print('No')