View Code of Problem 72

#include<bits/stdc++.h>
using namespace std;

int m,n;
double sum,x;
int main()
{
	cin>>m>>n;
	x = m;
	for(int i=0;i<n;i++) {
		sum+=x;
		x=x/2.0;
		if(i!=n-1)
			sum+=x;
	}
	printf("%.2lf %.2lf",x,sum);
	return 0;
 }