import java.util.*;

class No0175{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int l = sc.nextInt() - 3;
		int n = sc.nextInt();
		int sum = (int)Math.pow(2, l) * n;
		String s;
		for(int i = 0 ; i < n; i++){
			s = sc.next();
		}
		System.out.println(sum);
	}
}