C++ :

#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
	double n,sum;
	int m;
	cin>>n>>m;
	sum=-n;
	for (int i=1; i<=m; i++)
	{
		sum+=2*n;
		n/=2;
	}
	printf("%.2lf %.2lf\n",n,sum);
	return 0;
}