public static void main(String[] args) {

Scanner scanner=new Scanner (System.in);

int x1,y1,x2,y2,a,b;

boolean t,x11,y11,x22,y22;

System.out.print ("x1=");//

x1=scanner.nextInt ();

System.out.print ("y1=");//

y1=scanner.nextInt ();

System.out.print ("x2=");//

x2=scanner.nextInt ();

System.out.print ("y2=");//

y2=scanner.nextInt ();

x11=(0<x1)&&(x1<=8);

y11=(0<y2)&&(y1<=8);

x22=(0<x2)&&(x2<=8);

y22=(0<y2)&&(y2<=8);

a=Math.abs (y1-y2);

b=Math.abs (x1-x2);

t=((x11 && y11 && x22 && y22))&&((x1==x2 && y1!=y2)||(x1!=x2 && y1==y2))||a==b;

System.out.println (t);

}