Pupsen and Vupsen will soon celebrate their 16th birthday. Baba Kapa baked them a round cake and cut it into 16 equal fan-shaped pieces. Puppy and Puppy were just about to eat A and B of these slices, respectively, when they found a note attached to the cake that said "the same caterpillar cannot eat two adjacent pieces of cake." Can they both follow the instructions on the note and take the desired number of cake pieces?
Input
The input string contains two space-separated numbers
A and
B.
Imprint
Print the word
Hooray! on the screen if Pupsen and Vupsen can follow the instructions in the note and take the desired number of cake pieces, otherwise print the sad emoticon
:(.
Examples
| # |
Input |
Output |
| 1 |
5 4 |
Hooray! |
| 2 |
8 8 |
Hooray! |