How to sort SPOJ problems topic wise according to number of users

Let’s say i want to solve adhoc problems ( from most solved to the least, but i can’t sort it when i click on “users”, Is there any other way?

I said I want adhoc problems sorted by number of users. Please read the complete question.

i think it is the only way to find ad hoc problems on spoj . there is no complex search they implemented to sort everthing .

yep…It is not sorted.