I believe that this can answer your question.
same
adjective, adverb, pronoun
Same can be used in the following ways:
as an adjective (after "the," "this," "that," "these," or "those"): We both went to the same school. ♦ Our new competitors are those same people who once asked us to help them.
as a pronoun (after "the"): I'd do the same if I had the chance.
as an adverb (after "the"): The twins always dress the same.
The same is often followed by "as" or "that": Three-twelfths is the same as a quarter. ♦ I've got the same problem as you. ♦ It's the same film that they showed last year.
In informal spoken English "the" is sometimes left out before same: We'll meet again next week, same time, same place. But in written English same is almost always used with "the," "this," "that," etc.
The part "In informal spoken English "the" is sometimes left out before same: We'll meet again next week, same time, same place. But in written English same is almost always used with "the," "this," "that," etc." confirms my intuition that many people drop the the before same in real speech.
However, in written English, it's clear that we should use the same (or this, that, etc. same).