#include <bits/stdc++.h>
using namespace std;
#define int long long
signed main() {
  int N,H;
  cin >> N >> H;
  vector<int>vec(N);
  for(int i=0; i<N; i++){
      cin >> vec[i]; 
      if(H%vec[i] == 0){
          H /= vec[i];
      }
  }
  if(H == 1){
      cout << "YES" << endl;
      return 0;
  }
  cout << "NO" << endl;
}