結果
問題 |
No.2 素因数ゲーム
|
ユーザー |
|
提出日時 | 2023-08-22 13:34:20 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 2 ms / 5,000 ms |
コード長 | 1,951 bytes |
コンパイル時間 | 2,641 ms |
コンパイル使用メモリ | 196,400 KB |
最終ジャッジ日時 | 2025-02-16 12:14:44 |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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ファイルパターン | 結果 |
---|---|
other | AC * 31 |
ソースコード
// (◕ᴗ◕✿) #include <bits/stdc++.h> #define rep(i, n) for (ll i = 0; i < (n); i++) #define srep(i, s, n) for (ll i = s; i < (n); i++) #define len(x) ((int)(x).size()) #define all(x) (x).begin(), (x).end() using namespace std; template<typename T> using vc = vector<T>; template<typename T> using vv = vc<vc<T>>; using vi = vc<int>;using vvi = vv<int>; using vvvi = vv<vi>; using ll = long long;using vl = vc<ll>;using vvl = vv<ll>; using vvvl = vv<vl>; using ld = long double; using vld = vc<ld>; using vvld = vc<vld>; using vvvld = vc<vvld>; using uint = unsigned int; using ull = unsigned long long; const double pi = 3.141592653589793; const int inf = 0x3f3f3f3f; const ll INF = 0x3f3f3f3f3f3f3f3f; // const ll mod = 1000000007; const ll mod = 998244353; inline bool inside(long long y, long long x, long long H, long long W) {return 0 <= (y) and (y) < (H) and 0 <= (x) and (x) < (W); } #define debug(var) do{std::cout << #var << " : \n";view(var);}while(0) template<typename T> void view(T e){cout << e << endl;} template<typename T> void view(const vc<T>& v){for(const auto& e : v){ cout << e << " "; } cout << endl;} template<typename T> void view(const vv<T>& vv){ for(const auto& v : vv){ view(v); } } vc<pair<int, int>> factorization(ll &N){ vc<pair<int, int>> factors; ll tmp = N; for (ll i = 2; i * i <= N + 1; i++){ if (tmp % i == 0){ int cnt = 0; while (tmp % i == 0){ tmp /= i; cnt += 1; } factors.push_back(make_pair((int)i, cnt)); } } if (tmp != 1){ factors.push_back(make_pair((int)tmp, 1)); } if (len(factors) == 0){ factors.push_back(make_pair(N, 1)); } return factors; } int main(){ ll N; cin >> N; auto facts = factorization(N); ll p = 0; for (auto [i, cnt] : facts){ p ^= cnt; } cout << ((p) ? "Alice" : "Bob") << endl; }