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  1. #include <stdio.h>
  2. int trb(int n)
  3. {
  4. 	if(n==0 ||n==1) return 0;
  5. 	else if(n==2) return 1;
  6. 	else return trb(n-1)+trb(n-2)+trb(n-3);
  7. }
  8. int main(void) {
  9.  int n;	
  10. 	scanf("%d",&n);
  11. 	printf("%d",trb(n));
  12. 	return 0;
  13. }
  14.  
Success #stdin #stdout 0s 5300KB
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https://ideone.com/zHPnlm
課題４
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

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