View Code of Problem 72

#include <iostream>
#include <cstdio>
#include <iomanip>
using namespace std;
int main(){
    int m,n;
    double a=0.0,sum=0.0;
    cin>>m>>n;
    a=m;
    for(int i=0;i<n;i++){
        
        a=a/2.0;
        sum+=3.0*a;
    }
    cout<<a<<" "<<fixed<<setprecision(2)<<sum-a<<endl;
    return 0;
}