B

#include<stdio.h>
int main(void)
{
	int m,n,i;
	double h,s;

	scanf("%d %d",&m,&n);
	s=0;
	for(i=1;i<=n;i++){
		s=s+m;
		m=m/2;
		s=s+m;
	}
	h=m;
	printf("%.2f %.2f",h,s);
	
	return 0;
}