Complex

import java.util.*;


public class Calculator {


    public static void main (String[] args) {

        Scanner s = new Scanner(System.in);


        
        ArrayList<Complex> storage = new ArrayList<Complex>();


        char rechenop = '0';

        rechenop= s.next().charAt(0);        

        while ( s.hasNextInt() ) 
        {
            try {
                Complex b = new Complex(s.nextInt(),s.nextInt());
                storage.add(b);
                   } catch (InputMismatchException e) {
                       System.out.println("FALSCHE EINGABE1");
                   } catch (NoSuchElementException e) {
                       System.out.println("FALSCHE EINGABE2");
                   } 
               }

        Complex result = new Complex(0,0);


        switch (rechenop)
        {
            case '+':

                for (int i = 0; i < storage.size(); i++) {
                result.add(storage.get(i));
                }
                System.out.print(result.getAusgabe());
                break;
            case '-':

                for (int i = 0; i < storage.size(); i++){
                result.sub(storage.get(i));
                }
                System.out.print(result.getAusgabe());
                break;
            default:
                System.out.print("FALSCHE EINGABE3");

        }


    }


}

public class Complex
{
    private int imag, real;
    private int i = 0; //laufvariable

    public Complex(int real, int imag)
    {
        this.real = real;
        this.imag = imag;
    }


    public String getAusgabe()
    {
        return(this.real + " " + this.imag);
    }

    public void add(Complex c)
    {
        real += c.real;
    imag += c.imag;
    }

    public void sub(Complex c)
    {
        if (i == 0)
        {
            real = c.real;
            imag = c.imag;
        }
        else
        {
        real -= c.real;
        imag -= c.imag;
        }
        i++;
    }
}