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<<fixed<<setprecision(2)<<a<<" "<<sum-a<<endl;
        return 0;
    }