#include
#define F(x) x*x-3
void main()
{
float sum=0;
float h=100;
int n;
int i;
printf("Please type in n:");
scanf("%d",&n);
sum=h;
for(i=2;i<=n;i++)
sum+=h;
h=h/2;
}
printf("总路程为:%f\n",sum);
