#include <iostream>
#include<array>
#include <bits/stdc++.h>
using namespace std;
int main ()



{
    int n,x,y,px,py;
    cin>>n;
    while (n!=0){
            cin>>x>>y;
        for (int i=0;i<n;i++){
            cin>>px>>py;
            if(px<x){
                if(py<y){
                    cout<<"SO"<<endl;
                }
                else if(py>y){
                    cout<<"NO"<<endl;
                }
                else if(py==y){
                    cout<<"divisa"<<endl;
                }
            }
           else if(px>x){
                    if(py<y){
                    cout<<"SE"<<endl;
                }
                else if(py>y){
                    cout<<"NE"<<endl;
                }
                else if(py==y){
                    cout<<"divisa"<<endl;
                }
            }
            else if(px==x)
                cout<<"divisa"<<endl;

        }
        cin>>n;
    }


    return 0;
}