import sys
input = sys.stdin.readline

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

dp = [0 for _ in range(1<<N)]
dp[0] = K
for bit in range(1<<N):
    for i in range(N):
        if not bit&(1<<i):
            dp[bit|(1<<i)] = max(dp[bit] % A[i], dp[bit|(1<<i)])

print(dp[-1])