def gcd(x, y):
    while min(x, y) > 0:
        x, y = max(x, y), min(x, y)
        x %= y
    return max(x, y)


(n, h), a = [[*map(int, input().split())] for _ in range(2)]

for ai in a:
    if ai == 0:
        h = 1
        break
    h //= gcd(h, ai)

print("YES" if h == 1 else "NO")