#include<bits/stdc++.h>
using namespace std;

signed main(){

  int64_t n,k;
  cin>>n>>k;
  vector<int64_t> a(n);
  for(auto& ai:a)cin>>ai;
  sort(rbegin(a),rend(a));

  auto chmax = [](auto& a,auto b){if(a<b)a=b;};
  vector<int64_t> dp(1<<n,0);
  dp[0] = k;
  int64_t ans = 0;
  for(int b=0;b<(1<<n);++b){
    if(b>>(n-1)&1)chmax(ans,dp[b]);
    for(int i=0;i<n;++i){
      if(b>>i&1)continue;
      chmax(dp[b|(1<<i)],dp[b]%a[i]);
    }
  }
  cout<<(ans)<<endl;
  

}