#include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <utility>
#include <cmath>

using namespace std;

int main() {
	int l, n;

	cin >> l >> n;
	vector<string> s(n, "");
	for (int i = 0; i < n; i++) {
		cin >> s[i];
	}

	int ans = pow(2, l - 3) * n;

	cout << ans << endl;
	return 0;
}