#include <iostream>
#include <vector>
#include <string>
#include <cmath>
using namespace std;

int mygcd(int a, int b){
    while(b != 0){
        int r = a % b;
        a = b;
        b = r;
    }
    return a;
}

int main(){
    int n, h;
    cin >> n >> h;
    vector<int> a(n);
    for(auto &p: a) cin >> p;

    for(auto &p: a){
        int g = mygcd(abs(p), h);
        h /= g;
    }

    if(h == 1) cout << "YES" << endl;
    else cout << "NO" << endl;
    return 0;
}