N,K=map(int,input().split())
ans=0
A=list(map(int,input().split()))
#bitdp (2**N N)
dp=[[0 for j in range(N)] for i in range(2**N)]
#dp["0010101101"] := ex).A_2,,,,,,A_8を並び替えたときの考えうる最もいい最大値
dp[0]=[K for i in range(N)]
for i in range(1,2**N):
    x=format(i,"0%ib"%N)[::-1]
    for j in range(N):
        if x[j]=="1":
            for k in range(N):
                dp[i][j]=max(dp[i][j],dp[i-2**j][k]%A[j])
ans=max(dp[-1])
print(ans)