How does he declare const variable

what is
const int inf = (int)1e9 ?

if i am declaring static variable inside the recursion why it is not giving the answer.

Please share your code via ide.codingblocks.com so that i can have a look.

I hope I’ve cleared your doubt. I ask you to please rate your experience here
Your feedback is very important. It helps us improve our platform and hence provide you
the learning experience you deserve.

On the off chance, you still have some questions or not find the answers satisfactory, you may reopen
the doubt.