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