n, m = map(int, input().split())
l1 = list(map(int, input().split()))
l2 = list(map(int, input().split()))


flag = 0
for i in range(m):
    for j in range(n):
        if l2[i] == l1[j]:
            flag += 1
            break


if flag == m:
    print("Yes")
else:
    print("No")