/* Author:zeke pass System Test! GET AC!! */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using ll = long long; using ld = long double; using namespace std; #define rep(i, n) for(int i = 0; i < (int)(n); i++) #define all(x) (x).begin(),(x).end() #define rep3(var, min, max) for (ll (var) = (min); (var) < (max); ++(var)) #define repi3(var, min, max) for (ll (var) = (max) - 1; (var) + 1 > (min); --(var)) #define Mp(a,b) make_pair((a),(b)) #define F first #define S second #define Icin(s) ll (s);cin>>(s); #define Scin(s) ll (s);cin>>(s); templatebool chmax(T &a, const T &b) { if (abool chmin(T &a, const T &b) { if (b P; typedef vector V; typedef vector VV; typedef vector

VP; ll MOD = 1e9 + 7; ll INF =1e18; int N; int main() { cin.tie(0); ios::sync_with_stdio(false); int n; cin>>n; V vec(n); rep(i,n)cin>>vec[i]; sort(all(vec),greater()); if(vec[0]>2){ cout<<"B"<