#include <bits/stdc++.h>
using namespace std;
#ifdef ONPC
#include "debug.h"
#else
#define dbg(...)
#endif
#define ll long long
#define int long long
#define ld long double
#define pi pair<int, int>
#define sz(a) ((int)(a.size()))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define sqr(n) ((n) * (n))
#define divup(a, b) (((a) + (b)-1) / (b))
#define popcount(n) __builtin_popcountll(n)
#define clz(n) __builtin_clzll(n)
#define Fixed(a) cout << fixed << setprecision(12) << a;
template <class T> bool chmin(T& a, const T& b) { return b < a ? a = b, 1 : 0; }
template <class T> bool chmax(T& a, const T& b) { return b > a ? a = b, 1 : 0; }
const int mod = 998244353; // 998244353 1e9 + 7
const ll inf = (ll)(1e18) + 7;
const ld eps = 1e-9;
const int B = 10;
const int N = 1000 + 3;
const int logn = 20;
const int maxn = 2e5 + 7;
/////////////////////////solve/////////////////////////
int L;
vector<int> decode_a(int a) {
vector<int> res;
for (int i = 0; i < 2 * a; ++i) {
res.push_back(2);
}
assert(sz(res) <= L);
return res;
}
vector<int> decode_b(int b) {
vector<int> res;
for (int i = 0; i < 2 * b - 1; ++i) {
res.push_back(1);
}
assert(sz(res) <= L);
return res;
}
bool encode(int n, vector<int> c) {
int a = 0, b = 0;
if (c[0] % 2 != 0) swap(c[0], c[1]);
a = c[0] / 2;
b = (c[1] + 1) / 2;
// dbg(a, b);
return a > b;
}
vector<int> get_c(vector<int> res1, vector<int> res2) {
vector<int> c;
map <int, int> mp;
for (auto x : res1) {
mp[x]++;
}
for (auto x : res2) {
mp[x]++;
}
for (auto [x, cnt] : mp) {
c.push_back(cnt);
}
sort(all(c));
dbg(c);
return c;
}
void solve() {
cin >> L;
int t;
cin >> t;
vector<int> res1, res2;
while (t--) {
string cur;
cin >> cur;
if (cur == "alojzije") {
int a;
cin >> a;
vector<int> res = decode_a(a);
cout << sz(res) << " ";
for (auto x : res) cout << x << " ";
cout << endl;
res1 = res;
}
else if (cur == "benjamin") {
int b;
cin >> b;
vector<int> res = decode_b(b);
cout << sz(res) << " ";
for (auto x : res) cout << x << " ";
cout << endl;
res2 = res;
}
else {
int n;
cin >> n;
vector<int> c(n);
for (int i = 0; i < n; ++i) {
cin >> c[i];
}
bool res = encode(n, c);
cout << (res ? "A" : "B") << endl;
}
}
// vector<int> c = get_c(res1, res2);
// bool res = encode(sz(c), c);
// cout << (res ? "A" : "B") << endl;
}
signed main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
#ifdef ONPC
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
freopen("error.txt", "w", stderr);
#endif
solve();
}
