#include <iostream>
#include <cmath>
using namespace std;

class complex{
private :
  float x,y;
public:
  complex() {x=0;y=0;}
  complex(float a) {x=a;y=0;}
  complex(float a, float b) {x=a;y=b;}

  float real_part() { return x;}
  float imaginary_part() {return y;}
  void display();
  void set(float a) {x=a;y=0;}
  void set(float a, float b) {x=a;y=b;}
  void get_from_user();
};

void complex :: display(){
  cout <<"(" << x << ") + i(" << y << ")\n";
}

void complex :: get_from_user() {
  float x,y;
  cout << "Input real part \n";
  cin >> x;
  cout << "Input imaginary part \n";
  cin >> y;
  set(x,y);
}

complex sum(complex z1, complex z2) {
  complex s;
  float x,y;

  x = z1.real_part() + z2.real_part();
  y = z1.imaginary_part() + z2.imaginary_part();
  s.set(x,y);

  return s;
}

complex operator +(complex z1, complex z2) {
  complex s;
  float x,y;

  x = z1.real_part() + z2.real_part();
  y = z1.imaginary_part() + z2.imaginary_part();
  s.set(x,y);

  return s;
}

int main() {
  complex z1, z2, z3, z4;
  
  cout << "Input the first complex number \n";
  z1.get_from_user(); 
  cout << "Input the second complex number \n";
  z2.get_from_user();
  z3 = z1 + z2;
  cout << "The sum is \n";
  z3.display();

  z4 = (z1 + z2) + z3;
  cout << "The supersum is \n";
  z4.display();

  return 0;
}