#include<iostream>
#include<string>
using namespace std;

int main() {
	
	int L;
	cin >> L;
	int N;
	cin >> N;
	string s;
	for (int i = 0; i < N; i++) {
		cin >> s;
	}

	int count = N;

	for (int i = 0; i < L - 3;i++) {
		count *= 2;
	}

	cout << count << endl;

	return 0;
}