Ricardo Jorge da Costa Melo Neves rickdcneves
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| fib(0, 1) :- !. | |
| fib(1, 1) :- !. | |
| fib(N, Result) :- N1 is N - 1, N2 is N - 2, fib(N1, Result1), fib(N2, Result2), Result is Result1 + Result2. |