import java.util.*;
public class Solution{
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        if(sc.hasNextLine()){
        String[] sstr=sc.nextLine().trim().split("\\s+");
        }
        else{
            return;
        }
        if(sc.hasNextLine()){
        String[] mstr=sc.nextLine().trim().split("\\s+");
        }
        else{
            return;
        }
        ArrayList<Integer> ml=new ArrayList<>();
        ArrayList<Integer> sl=new ArrayList<>();
        try{
            for(int i=0;i<mstr.length;i++){
                int num=Integer.parseInt(mstr[i]);
                ml.add(num);
            }
            for(int i=0;i<sstr.length;i++){
                int num=Integer.parseInt(sstr[i]);
                
                sl.add(num);
            }
          HashSet<Integer> hd=new HashSet<>(ml);
          if(hd.size()==1){
              System.out.println("-1");
              return;
          }
          int idx=Collections.indexOfSubList(ml,sl);
          if(idx==-1){
              System.out.println("Sublist not found");
          }
          else{
          System.out.println("Sublist found");
        }
        }
        catch(NumberFormatException e){
            System.out.println("Invalid input");
        }
    }
}