#include <iostream>
#include<conio.h>
using namespace std;
class space
{
    int x;
    int y;
    int z;
    public:
    void getdata(int a, int b, int c);
    void display(void);
    void operator -();
};
void space :: getdata( int a, int b, int c)
{
    x=a;
    y = b;
    z=c;
}
void space :: display(void)
{
    cout<< x<<" ";
    cout << y<< " " ;
    cout << z<<"\n";
}
void space :: operator-()
{
    x=-x;
    y = -y;
    z =-z;
}
int main()
{
    space S;
    S.getdata(10,-20,30);
    cout<< "S :";
    S.display ();
    -S;
    cout<<"S :";
    S.display();
    getch();
    return 0;
}