#include<iostream>
using namespace std;
int main()
{
int x1,y1,x2,y2;
cout<<"coordonatele primului punct ";
cin>>x1>>y1;
cout<<"coordonatele celui de-al doilea punct ";
cin>>x2>>y2;
if(x1==x2) cout<<"verticala";
else if(y1==y2) cout<<"orizontala";
else cout<<"oblica";
}