#include <bits/stdc++.h>
using namespace std;
#include <boost/multiprecision/cpp_int.hpp>
typedef boost::multiprecision::cpp_int mp;

int natural_gcd(int a,int b){
    int m=min(a,b),M=max(a,b);
    int temp;
    while(m>0){
        temp=m;
        m=M%m;
        M=temp;
    }
    return M;
}

int main(){
    int N,H;
    cin>>N>>H;
    for(int i=0;i!=N;++i){
        int A;
        cin>>A;
        if(A==0){
            H=1;
            break;
        }
        H/=natural_gcd(H,abs(A));
    }
    cout<<(H==1?"YES":"NO")<<endl;
}