結果
| 問題 |
No.2724 Coprime Game 1
|
| コンテスト | |
| ユーザー |
risujiroh
|
| 提出日時 | 2024-04-12 21:54:18 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 53 ms / 2,000 ms |
| コード長 | 3,371 bytes |
| コンパイル時間 | 3,440 ms |
| コンパイル使用メモリ | 253,904 KB |
| 実行使用メモリ | 15,680 KB |
| 最終ジャッジ日時 | 2024-10-02 23:14:55 |
| 合計ジャッジ時間 | 3,580 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 7 |
ソースコード
#if __INCLUDE_LEVEL__ == 0
#include __BASE_FILE__
namespace {
using kactl::isprime;
constexpr int L = 3'000'000;
void solve() {
static std::vector<int> v;
if (v.empty()) {
kactl::eratosthenesSieve(kactl::MAX_PR);
v.resize(L + 1);
for (const int i : rep1(L)) {
v[i] = v[i - 1] + isprime[i];
}
}
int n;
scan(n);
if (isprime[n]) {
print('P');
return;
}
int t = v[n - 1] - v[n / 2];
t = n - t;
print("PK"[t & 1]);
}
} // namespace
int main() {
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
std::cout << std::setprecision(DBL_DECIMAL_DIG);
int t;
scan(t);
while (t--) {
solve();
}
}
#else // __INCLUDE_LEVEL__
#include <bits/stdc++.h>
// https://github.com/kth-competitive-programming/kactl
namespace kactl {
using namespace std;
#define rep(i, a, b) for (int i = a; i < (b); ++i)
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
const int MAX_PR = 5'000'000;
bitset<MAX_PR> isprime;
vi eratosthenesSieve(int lim) {
isprime.set();
isprime[0] = isprime[1] = 0;
for (int i = 4; i < lim; i += 2) isprime[i] = 0;
for (int i = 3; i * i < lim; i += 2)
if (isprime[i])
for (int j = i * i; j < lim; j += i * 2) isprime[j] = 0;
vi pr;
rep(i, 2, lim) if (isprime[i]) pr.push_back(i);
return pr;
}
#undef rep
} // namespace kactl
template <class T, class U = T>
bool chmin(T& x, U&& y) {
return y < x && (x = std::forward<U>(y), true);
}
template <class T, class U = T>
bool chmax(T& x, U&& y) {
return x < y && (x = std::forward<U>(y), true);
}
template <std::signed_integral T = int>
T inf() {
T ret;
std::memset(&ret, 0x3f, sizeof(ret));
return ret;
}
template <std::floating_point T>
T inf() {
return std::numeric_limits<T>::infinity();
}
template <class T>
concept Range = std::ranges::range<T> && !std::convertible_to<T, std::string_view>;
template <class T>
concept Tuple = std::__is_tuple_like<T>::value && !Range<T>;
namespace std {
istream& operator>>(istream& is, Range auto&& r) {
for (auto&& e : r) {
is >> e;
}
return is;
}
istream& operator>>(istream& is, Tuple auto&& t) {
return apply([&](auto&... xs) -> istream& { return (is >> ... >> xs); }, t);
}
ostream& operator<<(ostream& os, Range auto&& r) {
for (string_view sep = ""; auto&& e : r) {
os << exchange(sep, " ") << e;
}
return os;
}
ostream& operator<<(ostream& os, Tuple auto&& t) {
const auto f = [&](auto&... xs) -> ostream& {
[[maybe_unused]] string_view sep = "";
((os << exchange(sep, " ") << xs), ...);
return os;
};
return apply(f, t);
}
} // namespace std
void scan(auto&&... xs) { std::cin >> std::tie(xs...); }
void print(auto&&... xs) { std::cout << std::tie(xs...) << '\n'; }
template <class F>
class fix {
public:
explicit fix(F f) : f_(std::move(f)) {}
decltype(auto) operator()(auto&&... xs) const {
return f_(std::ref(*this), std::forward<decltype(xs)>(xs)...);
}
private:
F f_;
};
inline auto rep(int l, int r) { return std::views::iota(std::min(l, r), r); }
inline auto rep(int n) { return rep(0, n); }
inline auto rep1(int l, int r) { return rep(l, r + 1); }
inline auto rep1(int n) { return rep(1, n + 1); }
using namespace std::literals;
namespace ranges = std::ranges;
namespace views = std::views;
using i64 = std::int64_t;
#endif // __INCLUDE_LEVEL__
risujiroh