#include <iostream>
using namespace std;
double h,road;
int main(){
	cin>>h;
	road=h;
	int i=1;
	while(i<10){
		i++,h/=2;
		road+=2*h; 
	}
	cout<<road<<endl;
	cout<<h/2<<endl;       
	return 0;
}

通俗易懂！！！

#include <bits/stdc++.h>
using namespace std;
int main()
{
	double h,s=0;
	cin>>h;
	for(int i=1;i<=10;i++)
	{
		s+=h;
		h/=2;
		s+=h;
	}
	cout<<s-h<<endl<<h;
	return 0;
}