import java.io.*;

import java.math.*;

import java.security.*;

import java.text.*;

import java.util.*;

import java.util.concurrent.*;

import java.util.function.*;

import java.util.regex.*;

import java.util.stream.*;

import static java.util.stream.Collectors.joining;

import static java.util.stream.Collectors.toList;

class Circuit {

/*

provide instance variables

*/

public Circuit() {

/*

provide the body of the constructor

*/

}

/*

provide the implementations of the methods below

*/

public int getFirstSwitchState() // 0 for down, 1 for up

public int getSecondSwitchState()

public int getLampState() // 0 for off, 1 for on

public void toggleFirstSwitch()

public void toggleSecondSwitch()

}