I need help in c$++$ on this problem

main.cpp

$/**$

You have a green lottery ticket,

with ints a$,$ b$,$ and c on it$.$ If the numbers are

all different from each other, the result is $0.$

If all of the numbers are the same, the result

is $20.$ If two of the numbers are the same,

the result is $10.$

$*/$

int green$\_$ticket$($int a$,$ int b$,$ int c$)$

$\{$

int result;

$//$ Add your code here

return result;

$\}$