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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. int K;
  4. int rec(int i)
  5. {
  6. 	if(i<0)return 0;
  7. 	if(i==2 || i==0)return 1;
  8. 	int ANS = 0;
  9. 	for(int c=0; c<=K; c+=2)
  10. 	{
  11. 		if ((i-2-c)<0)break;
  12. 		ANS += rec(c)*rec(i-2-c);
  13. 	}
  14. 	return ANS;
  15. }
  16.  
  17. int main()
  18. {
  19. 	K=8;
  20. 	/*Part (a)*/
  21. 	cout<<rec(2*6)<<endl;
  22. 	K=4;
  23. 	/*Part (b) */
  24. 	cout<<rec(2*8)<<endl;
  25. 	/*Part (c)*/
  26. 	cout<<rec(2*10)<<endl;
  27. 	return 0;
  28. }
Success #stdin #stdout 0s 15240KB
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https://ideone.com/Pt541w
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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