import java.util.Scanner;

/**
 * @author 蓝色以太 while循环输出如下语句： 2*5=10 4*10=40 6*15=90 …… ?*100=?
 */
public class While {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入层高：");
        int num = sc.nextInt();
        int i = 1;
        while (i <= num) {
            System.out.println(i * 2 + "*" + i * 5 + "=" + (i * 2 * i * 5));
            i++;
        }

    }

}