import java.util.Scanner;

public class abc {

static void operate(Operation a){
a.open();
a.show();
a.close();

}
public static void main(String[] args) {
Scanner input =new Scanner(System.in);
int b=input.nextInt();
if (b==1) {
Operation a = new curtain();
operate(a);
}
if (b==2){
Operation a=new light();
operate(a);
}

}

}

public class curtain implements Operation{
@Override
public void open() {
System.out.println("窗帘已经拉开");
}

@Override
public void show() {
System.out.println("外面风景真美");
}

@Override
public void close() {
System.out.println("窗帘已经关闭");
}
}

public class light implements Operation{
public void open(){
System.out.println("灯已经打开");
}

@Override
public void show() {
System.out.println("灯光真柔和");
}

@Override
public void close() {
System.out.println("灯已经关闭");
}
}

interface Operation {
void open( );
void show( );
void close( );
}