#include <bits/stdc++.h>
#define REP(i, n) for(int i = 0;i < n;i++)
#define ll long long
using namespace std;
//typedef vector<unsigned int>vec;
//typedef vector<ll>vec;
//typedef vector<vec> mat;
typedef pair<int, int> P;
typedef pair<ll,ll> LP;
const int dx[8] = {1, 0, -1, 0, 1, -1, -1, 1};
const int dy[8] = {0, 1, 0, -1, 1, 1, -1, -1};
const int INF = 1000000000;
const ll LINF = 1000000000000000000;//1e18
const ll MOD = 1000000007;
const ll MOD2 = 998244353;
const double PI = acos(-1.0);
const double EPS = 1e-10;

template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return true; } return false; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return true; } return false; }
//template<class T> inline void add(T &a, T b){a = ((a+b) % MOD + MOD) % MOD;};


void solve(){
    int N, K;
    cin >> N >> K;
    vector<ll> A(N);
    REP(i,N) cin >> A[i];
    vector<vector<ll>> dp(N, vector<ll>(1<<N, -INF));
    // REP(i,N) dp[i][1<<i] = K % A[i];
    dp[0][0] = K;
    for(int i=1;i<(1<<N);i++){
        REP(j,N) if(i >> j & 1){//使う
            REP(k,N) if(dp[k][i-(1<<j)] != -INF){//一個前
                chmax(dp[j][i], dp[k][i-(1<<j)] % A[j]);
            }
        }
    }
    ll ans = 0;
    REP(i,N) chmax(ans, dp[i][(1<<N)-1]);
    cout << ans << endl;
}

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    solve();
    // int T; cin >> T; REP(t,T) solve();
}