#include <conio.h>;
#include <iostream>;
using namespace std;

int main()
{
    cout<<"Soprotivlenie"<<endl;
    int r1,r2,rps,q;
    float rpr;
    cout<<"Vvedite soprotivleniya R1 i R2:";
    cin>>r1>>r2;
    cout<<"Parallell'no ili posledavatel'no?(0,1):"<<endl;
    cin>>q;
    rpr=r1*r2/(r1+r2);
    rps=r1+r2;
    if(q==0){
            cout<<"R="<<rpr;
        }
        else{
                cout<<"R="<<rps;
            }
    getch();
    return 0;
}