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  1. #include<stdio.h>
  2.  
  3. int main(){
  4. 	int i,a[40];
  5.  
  6. 	a[0]=2;
  7. 	a[1]=-1;
  8.  
  9. 	for(i=0;i<=31;i++){
  10. 		a[i+2]=-a[i+1]+a[i]+2;
  11. 	}printf("%d",a[30]);
  12.  
  13. 	return 0;
  14. }
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin 
23
stdout 
2496122
https://ideone.com/HOdZAW
language:
C (gcc 8.3)
created:
168 days ago
visibility:
public

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