#include<stdio.h> #include<math.h> #include<string.h> void main() { float m,n,h,t; scanf("%f%f",&m,&n); t=m; printf("%.2f ",m/pow(2,n)); for(int i=0;i<=n-2;i++) t+=m/pow(2,i); printf("%.2f",t); }
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