#include<iostream>
#include<cstdlib>

using namespace std;

void test(int R , int F ,int &Num, double *&D){

double total=0;
D = new double[1000];
Num=0;

    do{
        D[Num]=R+F;
        total+=D[Num];
        Num++;
    }while(total<=9);
    do{
        D[Num]=(R+F)/2;
        total+=D[Num];
        Num++;
    }while(total<=19);

    for(int i=1; i<Num; i++){
        D[i]+=D[i-1];
    }
    cout<<"Num= "<<Num<<endl;
}

int main(){

int R,F;
int Num;
double *D;
//double *D=new double[1000];
//double D[1000];
cout<<"please input R & F: "<<endl;
        cout<<"R: ";
        cin>>R;
        cout<<"F: ";
        cin>>F;
        test(R,F,Num,D);

for(int i=0;i<Num;i++){

    cout<<D[i]<<endl;
}

return 0;

}