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  1. #include <stdio.h>
  2. int trb(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 trb(n-1)+trb(n-2)+trb(n-3);
  11. }
  12. int main(void) {
  13. 	int n;
  14. 	scanf("%d",&n);
  15. 	printf("%d",trb(n));
  16. 	return 0;
  17. }
  18.  
Success #stdin #stdout 0.01s 5320KB
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https://ideone.com/jdVXl1
language:
C99 (gcc 8.3)
created:
6 days ago
visibility:
public

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