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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. using ll = long long;
  4.  
  5. int main() {
  6.     ios::sync_with_stdio(false);
  7.     cin.tie(nullptr);
  8.  
  9.     int T;
  10.     if (!(cin >> T)) return 0;
  11.     while (T--) {
  12.         int N;
  13.         cin >> N;
  14.         vector<ll> A(N);
  15.         for (int i = 0; i < N; ++i) cin >> A[i];
  16.  
  17.         // 비트별 등장 횟수 (0..30)
  18.         const int B = 31; // 0..30 포함
  19.         vector<int> cnt(B, 0);
  20.         for (int i = 0; i < N; ++i) {
  21.             for (int b = 0; b < B; ++b) {
  22.                 if ( (A[i] >> b) & 1LL ) cnt[b]++;
  23.             }
  24.         }
  25.  
  26.         ll xr = 0;
  27.         for (int i = 0; i < N; ++i) {
  28.             ll forced = 0;
  29.             for (int b = 0; b < B; ++b) {
  30.                 if ( ((A[i] >> b) & 1LL) && cnt[b] == 1 ) {
  31.                     forced |= (1LL << b);
  32.                 }
  33.             }
  34.             ll d = A[i] - forced; // Nim-크기
  35.             xr ^= d;
  36.         }
  37.  
  38.         if (xr != 0) cout << "Alice\n";
  39.         else cout << "Bob\n";
  40.     }
  41.     return 0;
  42. }
Success #stdin #stdout 0.01s 5288KB
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
Alice
Alice
Alice
https://ideone.com/0gVmGG
language:
C++ (gcc 8.3)
created:
8 hours ago
visibility:
public

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