题解 | #补全构造方法#

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();
        int z = scanner.nextInt();
        Sub sub = new Sub(x, y, z);
        System.out.println(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;
}

}

class Sub extends Base {

private int z;

public Sub(int x, int y, int z) {

    super(x,y);
    this.z=z;
    

}

public int getZ() {
    return z;
}

public int calculate() {
    return super.getX() * super.getY() * this.getZ();
}

}