#include <bits/stdc++.h>
#define int long long
#define pb push_back
#define pii pair<int, int>
using namespace std;

const int inf = 1e18;

main() {
	int n, x;
	cin >> n >> x;
	vector<int> a(n);
	for(int i = 0; i < n ;i ++) {
		cin >> a[i];
	}
	sort(a.begin(), a.end());
	int l = 0, r = n - 1;
	int delta = inf, ans = inf;
	while(l < r) {
		if(abs(x - a[l] * a[r]) <= delta) {
			ans = min(ans, a[l] * a[r]);
			delta = abs(x - a[l] * a[r]);
		}
		if(a[l] * a[r] > x) {
			r--;
		} else if(a[l] * a[r] < x) {
			l++;
		} else {
			break;
		}
	}
	cout << ans << endl;
}