import itertools

n,m=map(int,input().split())
g=[[0]*n for _ in range(n)]
for _ in range(m):
  u,v=map(int,input().split())
  g[u][v]=1
  g[v][u]=1
  
v=set(map(int,input().split()))
s=0
for i in v:
  s+=1<<i
  
ans=False
  
for i in range(1<<n):
  if i.bit_count()<3:
    continue
  if i==s:
    continue
  p=[]
  for j in range(n):
    if i&1<<j:
      p.append(j)
  for v in itertools.permutations(p):
    bool=True
    l=len(v)
    for j in range(l):
      if not g[v[j]][v[(j+1)%l]]:
        bool=False
    if bool:
      ans=True
    
if ans:
  print('Yes')
else:
  print('No')