#include <stdio.h>
#include <math.h>
int main(void)
{
int M,N,i;
double h,x;
scanf("%d%d",&M,&N);
h=M/2;
x=M;
for(i=2;i<=N;i++)
{
x=x+h*2;
h=h/2;
}
printf("%.2f %.2f",h,x);
}
