#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define yes cout << "YES\n"
#define no cout << "NO\n"
const ll LNF = 9223372036854775807;
const int MAX = 1e5 + 10, INF = 0x7fffffff, mod = 1e9 + 7, mod2 = 998244353;

ll n, m, t;
string s;
void alc(){
    cin >> n;
    ll res = 0;
    for (int i = 0; i < n; ++ i){
        cin >> t;
        res |= (1 << t);
    }
    cout << res << endl;
}
void bob(){
    cin >> n;
    vector<int> ans;
	for (int i = 0; i < 22; ++ i){
		if (n & (1 << i)) ans.push_back(i);
	}
	cout << ans.size() << endl;
    for (auto i: ans) cout << i << ' ';
	cout << endl;
}
void solve(){
    cin >> s;
    if (s == "Alice") alc();
    else bob();
}
signed main(){
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    //cout << fixed << setprecision(12);
    //while (cin >> n)
	//int _;cin>>_;while(_--)
		solve();
    return 0;
}