import itertools

N, M = map(int, input().split())
arr = [[False] * N for _ in range(N)]
for _ in range(M):
    i, j = map(int, input().split())
    arr[i][j] = True
    arr[j][i] = True

V = set(map(int, input().split()))
for b in range(1 << N):
    t = []
    for i in range(N):
        if b & (1 << i):
            t.append(i)
    if set(t) == V:
        continue
    for u in itertools.permutations(t):
        if not u:
            continue
        if len(u) <= 2:
            continue
        flag = True
        if not arr[u[0]][u[-1]]:
            flag = False
        for i in range(1, len(u)):
            if not arr[u[i - 1]][u[i]]:
                flag = False
        if flag:
            print("Yes")
            exit()
print("No")