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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a[32], n, i, j, count,sum;
  5. 	i=0;
  6. 	a[0]=2;
  7. 	a[1]=-1;
  8. 	sum=0;
  9. 	for(n=2;n<=32;n++){
  10. 		a[n]=-a[n-1]+a[n-2]+2;
  11. 	}
  12. 	for(j=0;j<=32;j++){
  13. 		count=0;
  14. 		if(a[j]>=2){
  15. 			for(i=2;i<a[j];i++){
  16. 				if(a[j]%i==0)
  17. 					count++;}
  18. 				if(count<=0)
  19. 					sum++;
  20. 	}}
  21. 	printf("%d",sum);
  22. 	return 0;
  23. }
  24.  
Success #stdin #stdout 0.03s 5280KB
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https://ideone.com/TiZWPw
language:
C (gcc 8.3)
created:
45 days ago
visibility:
public

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