import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); while (scanner.hasNextInt()) { int x = scanner.nextInt(); int y = scanner.nextInt(); Sub sub = new Sub(x, y); sub.calculate(); } } } class Base { private int x; private int y; public Base(int x, int y) { this.x = x; this.y = y; } public int getX() { return x; } public int getY() { return y; } public void calculate() { System.out.println(getX() * getY()); } } class Sub extends Base { //write your code here...... public Sub(int x,int y) { super(x,y); } public void calculate() { if(getY()==0) { System.out.println("Error"); }else{ System.out.println(getX()/getY()); } } }