import itertools    
import sys
input = sys.stdin.readline
N, M = map(int, input().split())
G = [set() for _ in range(N)]
for _ in range(M):
    i, j = map(int, input().split())
    G[i].add(j)
    G[j].add(i)
V = list(map(int, input().split()))
V = set(V)
if N<=2:
    print("No")
    exit()
for k in range(3, N+1):
    for l in itertools.permutations(range(N), k):
        s = set(l)
        if s==V:
            continue
        flag = True
        for i in range(k):
            u = l[i]
            v = l[(i+1)%k]
            if v not in G[u]:
                flag = False
                break
        if flag:
            print("Yes")
            exit()
print("No")