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

MIN = min(A)
INF = 10**18
dp = [set() for _ in range(1<<N)]
dp[0].add(K)
for i in range(1<<N):
    if(not dp[i]):continue
    for j in range(N):
        if(i>>j & 1 == 1):continue
        next = i|(1<<j)
        for k in dp[i]:
            if(k%A[j] < K%MIN):continue
            dp[next].add(k%A[j])

print(max(dp[-1]))