#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define FOR(I,A,B) for(int I = int(A); I < int(B); ++I)
#define FORR(I,A,B) for(ll I = ll((B)-1); I >= ll(A); --I)
const ll MOD=1000000007LL;
#define out(a) cout<<fixed<<setprecision((a))
ll gcd_(ll a,ll b){if(a%b==0)return b;return gcd_(b,a%b);}
ll lcm_(ll a,ll b){ll c=gcd_(a,b);return ((a/c)*b);}



int main(){
	ll N,H;
	cin >> N >> H;

	map<ll,ll> cntH,cntA;
	ll m = 0;

	ll h = H;
	for(ll i=2;i*i<=H;i++){
		while(h%i==0){
			h /= i;
			cntH[i]++;
		}
	}
	if(h>1)cntH[h]++;

	FOR(j,0,N){
		cin >> H;
		h = H;
		if(H < 0){
			m++;
			H = -H;
		}
		for(ll i=2;i*i<=H;i++){
			while(h%i==0){
				h /= i;
				cntA[i]++;
			}
		}
		if(h>1)cntA[h]++;
	}

	bool ok = m%2==0;
	for(auto x:cntH){
		if(x.second > cntA[x.first]){
			ok = false;
		}
	}
	cout << (ok?"YES":"NO") << endl;
}