N,K = map(int,input().split())
A = list(map(int,input().split()))
AS = set(A)

for x in A:
  if x+1 in AS:
    if x == 10 or x == 8 or x == 5 or x == 3 or x == 2:
      pass
    else:
      print("No");exit()
  if x+3 in AS:
    if x == 5 or x == 2:
      pass
    else:
      print("No");exit()
  if x+5 in AS:
    if x == 11 or x == 9 or x == 6 or x == 4 or x == 3:
      pass
    else:
      print("No");exit()
print("Yes")