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  1. #include <stdio.h>
  2. int main(void)
  3. {
  4. 	int a0,a1,a,i;
  5. 	a0=1;
  6. 	a1=2;
  7. 	a=0;
  8. 	i=0;
  9. 	while(a<=1000)
  10. 	{
  11. 		a=3*a1+2*a0;
  12. 		a0=a1;
  13. 		a1=a;
  14. 		if(a>=100)
  15. 		{
  16. 			i+=1;
  17. 		}
  18. 	}
  19. 	printf("%d個\n",i-1);
  20. 	return 0;
  21. }
  22.  
Success #stdin #stdout 0.01s 5320KB
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2個
https://ideone.com/pyrq1x
language:
C (gcc 8.3)
created:
1 hour ago
visibility:
public

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