if ABC, CBA and BCA are all the same pizza then the order doesn't matter surely?
you need to know how many different toppings for a start, i.e. how many letters. and there must be an upper limit of the number of toppings per pizza?
@neu started
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if ABC, CBA and BCA are all the same pizza then the order doesn't matter surely?
you need to know how many different toppings for a start, i.e. how many letters. and there must be an upper limit of the number of toppings per pizza?