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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a[32],n,i,count,x,j;
  5. 	i=0;
  6. 	a[0]=2;
  7. 	a[1]=-1;
  8. 	x=0;
  9. 		for(n=2;n<=32;n++){
  10. 	a[n]=-a[n-1]+a[n-2]+2;}
  11. 	for(j=0;j<=32;j++){
  12. 		count=0;
  13. 	   if(a[j]>=2){
  14. 	for(i=2;i<a[j];i++){
  15.  
  16. 		if(a[j]%i==0){
  17. 			count++;}}
  18. 			if(count==0){
  19. 				x++;
  20. 	}}}
  21. 	printf("%d",x);
  22. 	return 0;
  23. }
  24.  
Success #stdin #stdout 0.03s 5272KB
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https://ideone.com/mIzhyu
language:
C (gcc 8.3)
created:
111 days ago
visibility:
public

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