#include <bits/stdc++.h>
using namespace std;

void main_program();

signed main(){
	ios_base::sync_with_stdio(0); cin.tie(0);
	main_program();
}

string player;

namespace alice {
	int n;

	void solve(){
		cin >> n;

		int num = 0;
		for (int i = 0; i < n; i++){
			int x; cin >> x;
			num |= (1 << x);
		}

		cout << num << "\n";
	}
}

namespace bob {
	vector<int> v;

	void solve(){
		int num; cin >> num;

		for (int i = 0; i < 20; i++){
			if ((num >> i) & 1) v.push_back(i);
		}

		cout << v.size() << "\n";
		for (int i = 0; i < (int)v.size(); i++){
			cout << v[i] << " \n"[i == (int)v.size() - 1];
		}
	}
}

void main_program(){
	cin >> player;

	if (player == "Alice") alice::solve();
	else bob::solve();
}