N, K = map(int, input().split())
A = tuple(map(int, input().split()))

dp = [0] * (1 << N)
dp[0] = K
for b in range(1, 1 << N):
    for i in range(N):
        if b >> i & 1:
            dp[b] = max(dp[b - (1 << i)] % A[i], dp[b])
print(dp[-1])