package yukikoda;
import java.util.Scanner;
public class gobe {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int L = sc.nextInt();
		int N = sc.nextInt();
		int sum = 1;
		String[] str = new String[N];
		
		for(int i=0; i<N; i++) {
			str[i] = sc.next();
		}
		
		if(L == 3) {
			System.out.println(N);
		}
		
		if(L > 3) {
			for(int i=1; i<=L-3; i++) {
				sum *= 2;
			}
			System.out.println(sum*N);
		}
	}
}