#include<iostream>
using namespace std;
class complex
{
public:
 
complex(){real=0;image=0;}
 
complex(double r,double i){real=r;image=i;}
 
complex complex_add(complex &c2);
 
complex complex_sub(complex &c2);
 
complex complex_mult(complex &c2);
 
complex complex_div(complex &c2);
void display();
 
private:
	double real;
	double image;
};
 
 
complex complex::complex_add(complex &c2)
{
complex c;
 
c.real=real+c2.real;
 
c.image=image+c2.image;
 
return c;
}
 
complex complex::complex_sub(complex &c2)
 
{
 complex d;
 
d.real=real-c2.real;
 
d.image=image-c2.image;
 
return d;
}
 
complex complex::complex_mult(complex &c2)
{
complex f;
 
f.real=real*c2.real;
 
f.image=image*c2.image;
 
return f;
}
 
complex complex::complex_div(complex &c2)
{
 complex g;
 g.real=real/c2.real;
 g.image=image/c2.image;
 return g;
}
 
 
void complex::display()
{
  cout<<"("<<real<<","<<image<<"i)"<<endl;
}
 
 
int main()
{
complex c1(2,5),c2(4,9),c3;  //i want input my own complex number.
c3=c1.complex_add(c2);
cout<<"c1=";c1.display();
cout<<"c2=";c2.display();
cout<<"c1+c2=";c3.display();
 
c3=c1.complex_sub(c2);
cout<<"c1=";c1.display();
cout<<"c2=";c2.display();
cout<<"c1-c2=";c3.display();
 
c3=c1.complex_mult(c2);
cout<<"c1=";c1.display();
cout<<"c2=";c2.display();
cout<<"c1*c2=";c3.display();
 
c3=c1.complex_div(c2);
cout<<"c1=";c1.display();
cout<<"c2=";c2.display();
cout<<"c1/c2=";c3.display();
 
return 0;
}

double r,im;
cin >> r >> im;
complex num(r,im);

 
std::istream& operator<<(std::istream& FX,complex& A)
  {  
      A.read(FX);
      return FX;
  }
std::ostream& operator>>(std::ostream& FX,const complex& A)
  {  
      A.write(FX);
      return FX;
  }

 
complex c;
std::cin>>c;
std::cout<<"You entered "<<c<<std::endl;
}

void complex::write(std::ostream& FX) const
{
    FX<<r<<"  "<<i;
}  
// AND
void complex::read(std::ostream& FX)
{
   FX>>r>>i;
}