#include<stdio.h> int main() { int i,N; double M,sum=0.0; scanf("%lf%d",&M,&N); for(i=1;i<=N;i++) { if(i=1) { sum+=M; } else { sum+=2*M; } M=M/2; } printf("%.2lf%.2lf",M,sum); return 0; }
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