#include <iostream>
#include <iomanip>
using namespace std;
class Complex
{
public:
Complex();
Complex(double r,double i);
double get_real();
double get_imag();
void display();
private:
double real;
double imag;
};
double Complex:: get_real()
{
return real;
}
double Complex ::get_imag()
{
return imag;
}
Complex::Complex()
{real=0;
imag=0;
}
Complex::Complex(double r,double i)
{
real=r;
imag=i;
}
void Complex::display()
{
cout<<"("<<real<<","<<imag<<"i)"<<endl;
}
Complex operator+(Complex &c1,Complex &c2)
{
return Complex(c1.get_real()+c2.get_real(),c1.get_imag()+c2.get_imag());
}
//主函数已给定如下，提交时不需要包含，会自动添加到程序尾部
/* C++代码 */
int main()
{
double real,imag;
cin>>real>>imag;
Complex c1(real,imag);
cin>>real>>imag;
Complex c2(real,imag);
Complex c3=c1+c2;
cout<<setiosflags(ios::fixed);
cout<<setprecision(2);
c3.display();
return 0;
}