#include <iostream>
#include <vector>
#include <algorithm>
#include <iomanip>
#include <string>
#include <stack>
#include <queue>
#include <map>
#include <set>
#include <tuple>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <climits>
#include <cassert>
#include <cstdint>
#include <cctype>
#include <numeric>
#include <bitset>
#include <functional>

using namespace std;

using ll =  long long;
using Pll = pair<ll, ll>;
using Pii = pair<int, int>;

constexpr int INF = 1 << 30;
constexpr ll LINF = 1LL << 60;
constexpr ll MOD = 1000000007;
constexpr long double EPS = 1e-10;
constexpr int dyx[4][2] = {
    { 0, 1}, {-1, 0}, {0,-1}, {1, 0}
};
constexpr int N_MAX = 100;

int main() {
    ios::sync_with_stdio(false); cin.tie(nullptr);
    int n, k;
    cin >> n >> k;
    vector<ll> a(n);
    for(int i=0;i<n;++i) {
        cin >> a[i];
    }
    ll ans = 0LL;
    vector<ll> dp(1<<n, 0);
    dp[0] = k;
    for(int i=0;i<(1<<n);++i) {
        for(int j=0;j<n;++j) {
            if(i & (1<<j)) continue;
            dp[i|(1<<j)] = max(dp[i] % a[j], dp[i|(1<<j)]);
            // cerr << (i|(1<<j)) << ": " << dp[i|(1<<j)] << endl;
        }
    }
    cout << dp[(1<<n)-1] << endl;
}