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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a=1,b=2,c,i,ans=0;
  5. 	for(i=1;i<100000;i++)
  6. 	{
  7. 		c = 3 * b + 2 * a;
  8. 		a = b;
  9. 		b = c;
  10. 		if(c >= 100 && c <=1000)
  11. 		{
  12. 			ans += 1;
  13. 		}
  14. 		else if(c > 1000)
  15. 		{
  16. 			break;
  17. 		}
  18. 	}
  19. 	printf("%d",ans);
  20. 	return 0;
  21. }
  22.  
Success #stdin #stdout 0s 5284KB
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https://ideone.com/GOJ7fb
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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