import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int m = sc.nextInt();
        int[] arrBig = new int[n];
        for (int i=0 ; i<n;i++){
            arrBig[i] = sc.nextInt();
        }
        int[] arrSmall = new int[m];
        for (int i=0 ; i<m;i++){
            arrSmall[i] = sc.nextInt();
        }
        outer:
        for (int i=0 ; i<n;i++) {
            if (arrBig[i] == arrSmall[0] && i < n - m + 1) {
                for (int j = 0; j < m; j++) {
                    if (arrBig[i + j] == arrSmall[j] && j < m - 1) {
                        continue;
                    } else if (arrBig[i + j] == arrSmall[j]) {
                        System.out.print("Yes");
                        break outer;
                        

                    } else {
                        break;
                    }

                }
                if (i == n - 1) {
                    System.out.println("NO");
                }
            }
        }
    }
}