import java.util.*;

public class NumbersGame {
    public static void main(String[] args){
        Scanner scanner = new Scanner(System.in);
        try{
            int Turn = scanner.nextInt();
            Integer[] TaroCards = new Integer[4];
            int[] num = new int[10];
            int ZiroCard ;
            
          
            
            for(int i = 0 ; i < Turn ; i++){
                  for(int k = 0 ; k < 4 ; k++){
                TaroCards[k] = scanner.nextInt();
            }
            
            String Ansewer = scanner.next();
            if(!(Ansewer.equals("YES") || Ansewer.equals("NO"))){
                System.out.println("結果はYESかNOで入力してください");
                System.exit(0);
            }
                for(int j = 0 ; j < num.length ; j++){
                    if(Ansewer.equals("YES")){
                        if(!Arrays.asList(TaroCards).contains(j)){
                            
                            num[j] = 1;
                        }
                    }else{
                        if(Arrays.asList(TaroCards).contains(j)){
                            num[j] = 1;
                        }       
                    }  
                }   
            }
            
            for(int k = 0 ; k < num.length ; k++){
                if(num[k] == 0){
                    System.out.println(k);
                }
            }
             
            
            
        }catch(InputMismatchException e){
            System.out.println("正しく入力してください。");
        }catch(Exception E){
            System.out.println("予期せぬエラーです。");
        }
        
    }
}