import cs1.Keyboard;
import java.lang.Math;
/**
   Calculate the quadrant of an angle.
   @author Greg Vogl
   last modified 2003-09-22
*/
public class Quadrant
{
   /**
      Calculate the quadrant of an angle.
   */
   public static void main (String[] args)
   {
      System.out.println("Calculate the quadrant of an angle.");

      // get input
      System.out.println("Type an integer angle (in degrees) and press Enter.");
      int n = Keyboard.readInt();

      int quadrant;
      if (n > 0)
         quadrant = (n / 90) % 4 + 1;
      else
         quadrant = 4 - (-n / 90) % 4;

      // output
      System.out.println("Quadrant is " + quadrant);
   }
}