import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int k = sc.nextInt();
        int[] arr = new int[k];
        for (int i = 0; i < k; i++) {
            arr[i] = sc.nextInt();
        }
        Arrays.sort(arr);
        for (int i = 0; i < k - 1; i++) {
            if ((arr[i] & arr[i + 1]) != arr[i]) {
                System.out.println(0);
                return;
            }
        }
        System.out.println(kaijo(n - k));
    }
    
    static long kaijo(long x) {
        long ret = 1;
        int mod = 1000000007;
        for (long i = 1; i <= x; i++) {
            ret *= i;
            ret %= mod;
        }
        return ret;
    }
}