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  1. #include <stdio.h>
  2. int main() {
  3. 	int a[50],i,sum=2;
  4. 	a[0]=2; a[1]=-1;
  5.  
  6. 	for(i=2;i<33;i++){
  7. 		a[i]=-a[i-1]+a[i-2]+2;
  8. 		if(i%4==0)
  9. 			sum=sum+a[i];
  10. 	}	
  11. 	printf("%d",sum);
  12. 	return 0;
  13. }
  14.  
Success #stdin #stdout 0s 5476KB
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https://ideone.com/0lzSIs
language:
C (gcc 8.3)
created:
1 year ago
visibility:
public

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