#include<stdio.h> main() { int n,i; double s=0.0,h,m; scanf("%lf %d",&m,&n); for(i=1;i<=n;i++) { h=m; m=m/2; if(i==1) s=h+s; else s=s+h*2; } printf("%.2f %.2f\n",m,s); }
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