n, m = map(int, input().split())
ln = list(map(int, input().split()))
lm = list(map(int, input().split()))
flag = 0
j = 0

for i in range(m):
    for j in range(n):
        if lm[i] == ln[j]:
            flag +=1

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