///colin hinton
///5th period
///XY.java
///12/3/2015
class XY
{
public static void main (String [] args)
{
System.out.println("X Y");
System.out.println("---------");
for (Double x = -10.0 ; x <= 10.0 ; x = x + .5)
{
System.out.println(x + " " + (x*x));
}
}
}