Skoki likes to count legs. All kinds of legs! Bear legs, human legs, chicken legs.
Skoki is also a magician. He once made an incantation which sent him to another universe.
There chickens have
7 legs, bears have
2 and humans have
The inhabitants of that universe were really big and Skoki was able to see only their legs because everything else was hidden by clouds. Skoki decided to count the legs and calculate the number of possible combinations of chicken, bears and humans.
You will receive an array of one element as the only parameter of
- Note: see sample tests
Print to the standard output, i.e. with the
- Print the number of possible combinations on a single line
- 2 <=