><code data-trim>
                            read (x); read (y);
                            if x > 0 then 
                                write ("1");
                            else 
                                write ("2");
                            end if;
                            if y > 0 then 
                                write ("3");
                            else 
                                write ("4");
                            end if;
                    </code></pre>
      