n, m = map(int, input().split())

list1 = list(map(int, input().split()))
list2 = list(map(int, input().split()))

b = True

for i in list2:
    if i in list1:
        b = True
    else:
        b = False
        break

if b == False:
    print("No")
else:
    print("Yes")


# 6 3
# 1 5 4 -2 6 9
# 4 -2 6