int main()
{
//freopen("in.txt","r",stdin);
int xi,yi,xf,yf;
scanf("%d",&xi);
scanf("%d",&yi);
scanf("%d",&xf);
scanf("%d",&yf);
while (xi != 0 && yi != 0 && xf != 0 && yf != 0)
{
//printf("%d %d %d %d\n", xi,yi,xf,yf);
printf("%d\n", coordenadas(xi,yi,xf,yf));
scanf("%d",&xi);
scanf("%d",&yi);
scanf("%d",&xf);
scanf("%d",&yf);
}
return 0;
}
std::vector<Coordenada> Personaje::coordenadas(){
return coordenadas(coordenada);
}
