#include <bits/stdc++.h>

using namespace std;
void fast_io() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
}

int main() {
    fast_io();
    int n, h;
    cin >> n >> h;
    for (int i = 0; i < n; i++) {
        int a;
        cin >> a;
        if (a < 0) {
            a *= -1;
        }
        h /= gcd(h, a);
    }
    cout << (h == 1 ? "YES" : "NO") << endl;
}