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  1. #include <stdio.h>
  2.  
  3. int trb(int n){
  4. 	if(n==0||n==1){
  5. 		return 0;
  6. 	}
  7. 	else if(n==2){
  8. 		return 1;
  9. 	}
  10. 	else{
  11. 		return trb(n-1)+trb(n-2)+trb(n-3);
  12. 	}
  13. }
  14.  
  15. int main(void){
  16. 	int n;
  17. 	scanf("%d",&n);
  18. 	printf("%d",trb(n));
  19. 	return 0;
  20. }
Success #stdin #stdout 0.01s 5296KB
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stdin
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6
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7
https://ideone.com/RTMF8J
プロ演2 4-4
language:
C (gcc 8.3)
created:
11 days ago
visibility:
public

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