import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        double x;

        System.out.println("x      |      y");
        System.out.println("---------------");


        for (x = -10; x <= 10; x = x+0.5){
            System.out.println(x + "            " + (x*x));
        }
    }
}