#include <iostream>
#include <numeric>

void solve() {
    int n, h;
    std::cin >> n >> h;

    while (n--) {
        int x;
        std::cin >> x;
        h /= std::gcd(h, std::abs(x));
    }

    std::cout << (h == 1 ? "YES" : "NO") << "\n";
}

int main() {
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    solve();

    return 0;
}