結果
| 問題 | No.3483 A Forbidden Fruit |
| コンテスト | |
| ユーザー |
risujiroh
|
| 提出日時 | 2026-03-27 21:48:27 |
| 言語 | C++23 (gcc 15.2.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 57 ms / 2,000 ms |
| コード長 | 3,285 bytes |
| 記録 | |
| コンパイル時間 | 3,172 ms |
| コンパイル使用メモリ | 335,320 KB |
| 実行使用メモリ | 6,272 KB |
| 最終ジャッジ日時 | 2026-03-27 21:48:46 |
| 合計ジャッジ時間 | 10,315 ms |
|
ジャッジサーバーID (参考情報) |
judge2_1 / judge3_1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 16 |
ソースコード
#if __INCLUDE_LEVEL__ == 0
#include __BASE_FILE__
void Solve() {
int64_t n, m, k;
IN(n, m, k);
double ans = 0.0;
/* for (int64_t x = 1; x <= n; ++x) {
if (k <= (x - 1) * m) {
ans += 1.0;
} else if (k <= (n - 1) * m + 1) {
ans += double(m - 1) / double(m);
} else {
ans += double(m - 1) / double(m) * (1.0 - double(k - (n - 1) * m - 1) / (double(m - 1)));
}
} */
int64_t X = DivCeil(k, m);
ans += double(n - X);
if (k <= (n - 1) * m + 1) {
ans += double(m - 1) / double(m) * X;
} else {
ans += double(m - 1) / double(m) * (1.0 - double(k - (n - 1) * m - 1) / (double(m - 1))) * X;
}
ans /= double(n);
OUT(ans);
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout << setprecision(DBL_DECIMAL_DIG);
int t;
IN(t);
while (t--) {
Solve();
}
}
#elif __INCLUDE_LEVEL__ == 1
#include <bits/stdc++.h>
template <class T>
concept MyRange =
std::ranges::range<T> &&
!std::convertible_to<T, std::string_view> &&
!std::convertible_to<T, std::filesystem::path>;
template <class T>
concept MyTuple = std::__is_tuple_like<T>::value && !MyRange<T>;
namespace std {
istream& operator>>(istream& is, MyRange auto&& r) {
for (auto&& e : r) {
is >> e;
}
return is;
}
istream& operator>>(istream& is, MyTuple auto&& t) {
apply([&](auto&... xs) { (is >> ... >> xs); }, t);
return is;
}
ostream& operator<<(ostream& os, MyRange auto&& r) {
auto sep = "";
for (auto&& e : r) {
os << exchange(sep, " ") << forward<decltype(e)>(e);
}
return os;
}
ostream& operator<<(ostream& os, MyTuple auto&& t) {
auto sep = "";
apply([&](auto&... xs) { ((os << exchange(sep, " ") << xs), ...); }, t);
return os;
}
} // namespace std
template <class T>
class OneBased {
public:
explicit OneBased(T&& x) : ref_(std::forward<T>(x)) {}
template <class... Ts>
requires(sizeof...(Ts) > 1)
OneBased(Ts&&... xs) : ref_(std::forward_as_tuple(std::forward<Ts>(xs)...)) {}
friend std::istream& operator>>(std::istream& is, OneBased x) {
if constexpr (MyRange<T>) {
for (auto&& e : x.ref_) {
is >> ::OneBased(e);
}
} else if constexpr (MyTuple<T>) {
std::apply([&](auto&... xs) { (is >> ... >> ::OneBased(xs)); }, x.ref_);
} else {
is >> x.ref_;
--x.ref_;
}
return is;
}
friend std::ostream& operator<<(std::ostream& os, OneBased x) {
if constexpr (MyRange<T>) {
auto f = [](auto&& e) { return ::OneBased(std::forward<decltype(e)>(e)); };
os << (x.ref_ | std::views::transform(f));
} else if constexpr (MyTuple<T>) {
std::apply([&](auto&... xs) { os << std::tuple(::OneBased(xs)...); }, x.ref_);
} else {
os << ++x.ref_;
--x.ref_;
}
return os;
}
private:
T ref_;
};
template <class T>
OneBased(T&&) -> OneBased<T>;
template <class... Ts>
OneBased(Ts&&...) -> OneBased<std::tuple<Ts...>>;
using namespace std;
#define LAMBDA2(x, y, ...) ([&](auto&& x, auto&& y) -> decltype(auto) { return __VA_ARGS__; })
#define DivCeil(...) LAMBDA2(x, y, x / y + ((x ^ y) >= 0 && x % y))(__VA_ARGS__)
#define IN(...) (cin >> forward_as_tuple(__VA_ARGS__))
#define OUT(...) (cout << forward_as_tuple(__VA_ARGS__) << '\n')
#endif // __INCLUDE_LEVEL__ == 1
risujiroh