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  1. #include <stdio.h>
  2. int tri(int n){
  3. 	if(n==0)
  4. 		return 0;
  5. 	else if(n==1)
  6. 		return 0;
  7. 	else if(n==2)
  8. 		return 1;
  9. 	else 
  10. 		return tri(n-1)+tri(n-2)+tri(n-3);
  11. }
  12. int main(void) {
  13. 	// your code goes here
  14. 	int n=7;
  15. 	printf("%d",tri(n));
  16. 	return 0;
  17. }
  18.  
Success #stdin #stdout 0.01s 5280KB
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13
https://ideone.com/Ag1Ya4
language:
C (gcc 8.3)
created:
8 days ago
visibility:
public

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