import java.util.*;

public class SublistCheck {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        try {
            // Read sublist
            String line1 = sc.nextLine().trim();
            String line2 = sc.nextLine().trim();

            if (line1.isEmpty() || line2.isEmpty()) {
                System.out.println("Sublist not found");
                return;
            }

            List<Integer> sublist = new ArrayList<>();
            for (String s : line1.split("\\s+")) {
                sublist.add(Integer.parseInt(s));
            }

            List<Integer> mainlist = new ArrayList<>();
            for (String s : line2.split("\\s+")) {
                mainlist.add(Integer.parseInt(s));
            }

            // Special case: all elements same in both lists
            if (allSame(sublist) && allSame(mainlist)) {
                System.out.println("-1");
                return;
            }

            // Sublist longer than mainlist → not possible
            if (sublist.size() > mainlist.size()) {
                System.out.println("Sublist not found");
                return;
            }

            // Check sublist presence
            if (containsSublist(mainlist, sublist)) {
                System.out.println("Sublist found");
            } else {
                System.out.println("Sublist not found");
            }

        } catch (Exception e) {
            System.out.println("Invalid input");
        }
    }

    private static boolean allSame(List<Integer> list) {
        if (list.isEmpty()) return false;
        for (int i = 1; i < list.size(); i++) {
            if (!list.get(i).equals(list.get(0))) return false;
        }
        return true;
    }

    private static boolean containsSublist(List<Integer> main, List<Integer> sub) {
        for (int i = 0; i <= main.size() - sub.size(); i++) {
            if (main.subList(i, i + sub.size()).equals(sub)) {
                return true;
            }
        }
        return false;
    }
}