#include "stdafx.h"
#include
#include
using namespace std;
int main ()
{
unsigned short int x1,y1,x2,y2;
cout << "Input x1: ";</span>
cin>> x1;
cout<<endl<<"Input y1: ";</span>
cin>> y1;
cout << "Input x2: ";</span>
cin>> x2;
cout<<endl<<"Input y2: ";<br> cin>> y2;
if ((abs(x2-x1)!=1) || (abs(y2-y1) !=2))
{cout<<"NOT";}</span> else
{cout<<"OK"<<endl;}</span>
system("PAUSE");
return 0;
}