#include<stdio.h> #include<math.h> int main(void) { int i; double m,n; double x,sum,y; sum=0; scanf("%lf %lf",&m,&n); for(i=1;i<=n;i++){ x=m*pow(0.5,i); sum=sum+2*m*pow(0.5,i-1); } y=sum-m; printf("%.2f %.2f",x,y); return 0; }