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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5.     ios::sync_with_stdio(false);
  6.     cin.tie(nullptr);
  7.  
  8.     int T;
  9.     cin >> T;
  10.     while (T--) {
  11.         int N;
  12.         cin >> N;
  13.         vector<int> A(N);
  14.         for (int i = 0; i < N; ++i) cin >> A[i];
  15.  
  16.         int OR = 0;
  17.         for (int x : A) OR |= x;
  18.  
  19.         int winnerAlice = 0;
  20.         for (int b = 30; b >= 0; --b) {
  21.             if ((OR >> b) & 1) {
  22.                 int cnt = 0;
  23.                 for (int x : A) if ((x >> b) & 1) ++cnt;
  24.                 int others = N - cnt;
  25.  
  26.                 if (cnt % 2 == 1) {
  27.                     if (cnt % 4 == 1 || (cnt % 4 == 3 && others % 2 == 1)) 
  28.                         winnerAlice = 1;
  29.                     else 
  30.                         winnerAlice = 0;
  31.                 } else {
  32.                     winnerAlice = 0;
  33.                 }
  34.                 break;
  35.             }
  36.         }
  37.         cout << (winnerAlice ? "Alice" : "Bob") << '\n';
  38.     }
  39. }
Success #stdin #stdout 0.01s 5312KB
comments (?)
stdin 
4
3
3 4 6
3
7 7 7
3
9 3 5
10
1 9 1 3 7 9 10 9 7 3
stdout 
Bob
Bob
Alice
Bob
https://ideone.com/sqh7Yc
language:
C++ (gcc 8.3)
created:
7 hours ago
visibility:
public

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