#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
using namespace std;
using ll = long long ;
using P = pair<int,int> ;
using pll = pair<long long,long long>;
constexpr int INF = 1e9;
constexpr long long LINF = 1e17;
constexpr int MOD = 1000000007;
constexpr double PI = 3.14159265358979323846;

int a[200005];

int gcd(int i,int j){
    if(j == 0) return i;
    else return gcd(j,i%j);
}

int main(){
    int n,h;
    cin >> n >> h;
    rep(i,n) cin >> a[i];
    rep(i,n) a[i] = abs(a[i]);
    rep(i,n){
        int res = gcd(a[i],h);
        h /= res;
    }
    if(h == 1) cout << "YES" << endl; 
    else cout << "NO" << endl;
    return 0;
}