interface IJumper{
	int start;
	int end;
}
class Snake implements IJumper{
	public Snake(int start, int end){
		this.start = start;
		this.end = end;
		if(start < end)
			throw Exception("Invalid Snake");
	}
}
class Ladder implements IJumper{
	public Ladder(int start, int end){
		this.start = start;
		this.end = end;
	}
	if(start > end)
		throw Exception("Invalid Ladder");
}
class Player{
	Account account;
	String specialId;
	bool isActive;

	int rollDice(){
		/*Generate random numbers from 1 to 6*/
	}
}
class Account{
	string firstName;
	string lastName;
	string email;
	string phone;
	int points;
}
class SALGame{
	int board[100];
	List<Player> players;
	List<IJumper> snakes;
	List<IJumper> ladders'
	Player winner;
	bool isActive = false;
	public SALGame(List<Players> players, List<IJumper> snakes, List<IJumper> ladders){
		this.players = players;
		this.snakes = snakes;
		this.ladders = ladders;
		startGame();
	}
	private void cleanBoard(){
		for(int i=0; i<100; i++) board[i] = -1;
	}
	private void startGame(){
		cleanBoard();
		for(int i=0; i<snakes.size(); i++) board[snakes[i].start] = snakes[i].end;
		for(int i=0; i<ladders.size(); i++) board[ladders[i].start] = ladders[i].end;
		isActive = true;
		play();
	}
	private void play(){
		queue<pair<Player, int>> q;
		for(int i=0; i<players.size(); i++) q.push(make_pair(players[i], 0));

		while(!q.empty()){
			Player curr = q.front().first;
			int position = q.front().second;
			q.pop();
			//Simulating dice throw
			Thread.currentThread().sleep(10000);
			int dx = player.rollDice();

			if(position + dx == 99){
				winner = player;
				break;
			}

			if(position + dx > 99)
				continue;

			if(board[position+dx]==-1)
				q.push(make_pair(player, position+dx));
			else
				q.push(make_pair(player, board[position+dx]));
		}
	}
	public void resetGame(){
		cleanBoard();
	}
}
class System{
	List<SALGame> games;

	bool startGame(List<Players> players, List<IJumper> snakes, List<IJumper> ladders){
		games.add(new SALGame(players, snakes, ladders));
	}

	for(int i=0; i<games.length(); i++)
		cout<<games[i].winner.firstname<<endl;
}