n,m,K=map(int,input().split())
x=list(map(int,input().split()))
for i in range(K):
  x[i]-=1
e=[[] for i in range(n)]
for i in range(m):
  u,v=map(int,input().split())
  u-=1
  v-=1
  e[u]+=[v]
  e[v]+=[u]
E=[]
for s in range(n):
  q=[0]*(1<<n)
  q[1<<s]|=1<<s
  for i in range(1<<n):
    for j in range(n):
      if (q[i]>>j)&1:
        for k in e[j]:
          if (i>>k)&1==0:
            q[i|(1<<k)]|=1<<k
  E+=[[0]*n]
  for i in range(1<<n):
    for j in range(n):
      if (q[i]>>j)&1:
        E[s][j]|=1<<(i.bit_count()-1)
for i in range(n):
  g=(1<<n)-1
  for j in range(K):
    g&=E[x[j]][i]
  if g>0:
    print("Yes")
    exit()
print("No")