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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. unsigned long long p(int n){
  5. 	if (n == 1)
  6. 		return 1;
  7. 	return p(n - 1) * 2 + 1;
  8. }
  9.  
  10. void h(int n, int a, int b){
  11. 	if (n == 0)
  12. 		return;
  13. 	h(n - 1, a, 6 - a - b);
  14. 	cout << a << " -> " << b << endl;
  15. 	h(n - 1, 6 - a - b, b);
  16. }
  17.  
  18. int main() {
  19. 	int n;
  20. 	cin >> n;
  21. 	h(n, 1, 2);
  22. 	cout << p(n); /// / 60 / 60 / 24 / 366;
  23. 	return 0;
  24. }
Success #stdin #stdout 0.01s 5304KB
comments (?)
stdin
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3
stdout
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1 -> 2
1 -> 3
2 -> 3
1 -> 2
3 -> 1
3 -> 2
1 -> 2
7
https://ideone.com/zH4Wte
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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