public static void Main(string[] args)
{
int[] NX = Console.ReadLine().Split(' ').Select(a => int.Parse(a)).ToArray();
int N = NX[0];
int X = NX[1];
int[] ss = Console.ReadLine().Split(' ').Select(a => int.Parse(a)).ToArray();
Array.Sort(ss);
List <int> S = ss.ToList();
Factorial fact = new Factorial(N, 100000007);
Solver solver = new Solver(X, fact, S);
Console.WriteLine(solver.solve());
}
public Solver(int X, Factorial fact, List <int> S)
{
this.X = X;
this.fact = fact;
this.S = S;
}
