n, h = map(int, input().split())
a = list(map(int, input().split()))

sum = 1
while True:
    b = []
    for i in range(len(a) // 2):
        b.append(a[i * 2] * a[i * 2 + 1])
    if len(a) % 2:
        b.append(a[-1])
    a = b
    if len(a) == 1:
        break
if a[0] % h == 0:
    print("YES")
else:
    print("NO")