import java.util.*;
public class Dna{
	public static void main(String[] arg){
		Scanner sc = new Scanner(System.in);
		int l,n,res;
		l = sc.nextInt();
		n = sc.nextInt();
		String[] s = new String[n];
		for(int i = 0;i<n;i++){
			s[i] = sc.next();
		}
		l = l -3;
		res = n*(int)Math.pow(2,l);
		System.out.println(res);
	}
}