#include<iostream>
#include<cmath>
#include<string>
using namespace std;
int main(void)
{
	int l, n; cin >> l >> n;
	for (int i = 0; i < n; i++){
		string s; cin >> s;
	}
	cout << (pow(2, l - 3)*n) << endl;
	return 0;
}