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

q = list([-i for i in A])
heapq.heapify(q)
while(q):
    now = heapq.heappop(q);now *= -1

    for a in range(6):
        if(all(now-5+a+i in A for i in range(6))):
            print("No")
            exit()

    for x in range(1,7):
        if(now + 7 - 2*x in A and now - x > 0):
            A.add(now - x)
            heapq.heappush(q, -(now - x))

print("Yes" if 1 not in A else "No")