View Code of Problem 72

#include<iostream>
#include<string>
#include<iomanip>
using namespace std;
int main()
{
	double m,n,sum=0,term;
	cin>>m>>n;
	term =m;
	for(int i=0;i<n;i++)
	{
		if(i==n-1)
		{
			sum+=term;
			term=term/2;
		}
		else
		{
			sum+=term+term/2;
			term=term/2;
		}		
	}
	cout<<fixed<<setprecision(2)<<term<<" "<<sum<<endl;
	return 0;
}