#include<iostream>
using namespace std;

double m,sum;
int n;


int main()
{
    cin>>m>>n;
    sum=m;
    double x;
    while(n--)
    {
        x=m/2;
        sum+=2*x;
        m/=2;
    }
    sum-=2*x;
    printf("%.2f %.2f",x,sum);
    return 0;
}