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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a=1,b=2,c,i,q,ans=0;
  5. 	for(i=1;c<1000;i++)
  6. 	{
  7. 		c = 3 * b + 2 * a;
  8. 		a = b;
  9. 		b = c;
  10. 		q = (c >= 100) && (c <= 1000);
  11. 		ans += q;
  12. 	}
  13. 	printf("%d",ans);
  14. 	return 0;
  15. }
Success #stdin #stdout 0.01s 5312KB
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https://ideone.com/UGrWZw
language:
C (gcc 8.3)
created:
3 days ago
visibility:
public

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