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  1.  
  2. unsigned long long fibb(unsigned long long Solve)
  3. {
  4. 	if (Solve==1) return 1;
  5. 	unsigned long long Even = 0;
  6. 	unsigned long long Odd = 1;
  7. 	unsigned long long Loops = Solve/16+1;
  8. 	switch (Solve%16/2) {
  9. 		do {
  10. 	case 0: Even+=Odd; Odd+=Even;
  11. 	case 7: Even+=Odd; Odd+=Even;
  12. 	case 6: Even+=Odd; Odd+=Even;
  13. 	case 5: Even+=Odd; Odd+=Even;
  14. 	case 4: Even+=Odd; Odd+=Even;
  15. 	case 3: Even+=Odd; Odd+=Even;
  16. 	case 2: Even+=Odd; Odd+=Even;
  17. 	case 1: Even+=Odd; Odd+=Even;
  18. 		}while(--Loops);
  19. 	};
  20. 	return (Solve&1 ? Odd+Even : Odd);
  21. }
  22. #include <iostream>
  23. int main() {
  24.     std::cout << fibb(59);
  25. }
Success #stdin #stdout 0s 2928KB
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1548008755920
https://ideone.com/dQtVl
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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