$()$

A farmer is asking you to tell him how many legs can be counted among all

his animals. The farmer breeds three species:

chickens

$=2$ legs

cows

$=4$ legs

pigs

$=4$ legs

The farmer has counted his animals and he gives you a subtotal for each

species. You have to implement a function that returns the total number of

legs of all the animals.

Examples

Plain Text

animals $(2,3,5)+36$

animals $(1,2,3)+22$

animals $(5,2,8)+50$

Notes

Don't forget to

return

the result.

The order of animals passed is

animals$($chickens$,$ cows, pigs$)$

Remember that the farmer wants to know the total number of legs and not

the total number of animals.