View Code of Problem 3695

#include<stdio.h>
int main()
{
	int i,n,a1,a2,sum,sum1;
	int t;
	scanf("%d",&t);
	while(t--)
	{   sum1=3;
		a1=1;a2=2;
		scanf("%d",&n);
		if(n==1)
		   printf("%d\n",a1);
		if(n==2)
		   printf("%d\n",a2+a1);
		if(n>2)
		   {
			 for(i=3;i<=n;i++)
		    { sum=a1+a2;
		      a1=a2;
		      a2=sum;
		      sum1=sum1+sum;
		    	
			}
			 printf("%d\n",sum1);}
	}
	return 0;
}