#include<stdio.h> void main(){ double M,n,sum=0,i; scanf("lf% %lf",&M,&n); sum=M; for(i=1;i<n;i++){ M=M/2; sum+=M; if(i>0) sum+=M; if(i==n-1) M=M/2; } printf("%.2lf %.2lf\n",M,sum); }
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