結果
| 問題 |
No.986 Present
|
| コンテスト | |
| ユーザー |
ngtkana
|
| 提出日時 | 2020-02-11 15:31:25 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 60 ms / 2,000 ms |
| コード長 | 7,182 bytes |
| コンパイル時間 | 1,721 ms |
| コンパイル使用メモリ | 173,752 KB |
| 実行使用メモリ | 6,820 KB |
| 最終ジャッジ日時 | 2024-10-01 07:58:16 |
| 合計ジャッジ時間 | 3,103 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 30 |
ソースコード
#define DEBUG 1
#include <bits/stdc++.h>
#define loop(n) for (lint ngtkana_is_a_genius = 0; ngtkana_is_a_genius < lint(n); ngtkana_is_a_genius++)
#define rep(i, begin, end) for (lint i = lint(begin); (i) < lint(end); i++)
#define all(v) v.begin(), v.end()
#define rand(l, r) std::uniform_int_distribution<>(l, r)(mt)
using lint = long long;
auto mt = std::mt19937_64(std::random_device{}());
auto cmn = [](auto&& pow2, auto b){ if (pow2 > b) {pow2 = b; return true;} return false; };
auto cmx = [](auto&& pow2, auto b){ if (pow2 < b) {pow2 = b; return true;} return false; };
void debug_impl() { std::cerr << std::endl; }
template <typename Head, typename... Tail>
void debug_impl(Head head, Tail... tail) { std::cerr << " " << head; debug_impl(tail...); }
#if DEBUG
#define debug(...)\
do {\
std::cerr << std::boolalpha << "[" << #__VA_ARGS__ << "]:";\
debug_impl(__VA_ARGS__);\
std::cerr << std::noboolalpha;\
} while (false)
#else
#define debug(...) {}
#endif
template <typename T>
T inverse(T pow2, T m) {
T u = 0, v = 1;
while (pow2 != 0) {
T t = m / pow2;
m -= t * pow2; std::swap(pow2, m);
u -= t * v; std::swap(u, v);
}
assert(m == 1);
return u;
}
template <typename T>
class modular {
private:
int value;
public:
constexpr modular() = default;
constexpr modular(const modular&) = default;
constexpr modular(modular&&) = default;
modular& operator=(const modular&) = default;
modular& operator=(modular&&) = default;
template <typename U>
modular (const U& x) {value = normalize(x);}
template <typename U>
static auto normalize(const U& x) {
int v = static_cast<int>(-mod() <= x && x < mod() ? x : x % mod());
if (v < 0) v += mod();
return v;
}
auto const& operator()() const { return value; }
template <typename U>
explicit operator U() const { return static_cast<U>(value); }
constexpr static auto mod() { return T::value; }
auto& operator+=(const modular& other) {
if ((value += other.value) >= mod()) value -= mod();
return *this;
}
auto& operator-=(const modular& other) {
if ((value -= other.value) < 0) value += mod();
return *this;
}
template <typename U>
auto& operator+=(const U& other) {return *this += modular(other); }
template <typename U>
auto& operator-=(const U& other) {return *this -= modular(other); }
auto operator-() const { return modular(-value); }
auto& operator++() {return *this += 1;}
auto& operator--() {return *this -= 1;}
auto operator++(int) {modular result(*this); operator++(); return result;}
auto operator--(int) {modular result(*this); operator--(); return result;}
template <typename U = T>
auto& operator*=(const modular& rhs) {
value = normalize(static_cast<int64_t>(value) * static_cast<int64_t>(rhs.value));
return *this;
}
auto& operator/=(const modular& other) {
return *this *= modular(inverse(other.value, mod()));
}
};
template <typename T> struct is_modular : std::false_type {};
template <typename T> struct is_modular <modular<T>> : std::true_type{};
template <typename T> constexpr bool is_modular_v = is_modular<T>::value;
template <typename T> bool operator==(const modular<T>& lhs, const modular<T>& rhs) { return lhs() == rhs(); }
template <typename T, typename U> bool operator==(const modular<T>& lhs, U rhs) { return lhs == modular<T>(rhs); }
template <typename T, typename U> bool operator==(U lhs, const modular<T>& rhs) { return modular<T>(lhs) == rhs; }
template <typename T> bool operator!=(const modular<T>& lhs, const modular<T>& rhs) { return !(lhs == rhs); }
template <typename T, typename U> bool operator!=(const modular<T>& lhs, U rhs) { return !(lhs == rhs); }
template <typename T, typename U> bool operator!=(U lhs, const modular<T>& rhs) { return !(lhs == rhs); }
template <typename T> modular<T> operator+(const modular<T>& lhs, const modular<T>& rhs) { return modular<T>(lhs) += rhs; }
template <typename T, typename U> modular<T> operator+(const modular<T>& lhs, U rhs) { return modular<T>(lhs) += rhs; }
template <typename T, typename U> modular<T> operator+(U lhs, const modular<T>& rhs) { return modular<T>(lhs) += rhs; }
template <typename T> modular<T> operator-(const modular<T>& lhs, const modular<T>& rhs) { return modular<T>(lhs) -= rhs; }
template <typename T, typename U> modular<T> operator-(const modular<T>& lhs, U rhs) { return modular<T>(lhs) -= rhs; }
template <typename T, typename U> modular<T> operator-(U lhs, const modular<T>& rhs) { return modular<T>(lhs) -= rhs; }
template <typename T> modular<T> operator*(const modular<T>& lhs, const modular<T>& rhs) { return modular<T>(lhs) *= rhs; }
template <typename T, typename U> modular<T> operator*(const modular<T>& lhs, U rhs) { return modular<T>(lhs) *= rhs; }
template <typename T, typename U> modular<T> operator*(U lhs, const modular<T>& rhs) { return modular<T>(lhs) *= rhs; }
template <typename T> modular<T> operator/(const modular<T>& lhs, const modular<T>& rhs) { return modular<T>(lhs) /= rhs; }
template <typename T, typename U> modular<T> operator/(const modular<T>& lhs, U rhs) { return modular<T>(lhs) /= rhs; }
template <typename T, typename U> modular<T> operator/(U lhs, const modular<T>& rhs) { return modular<T>(lhs) /= rhs; }
template<typename T, typename U>
modular<T> power (const modular<T>& pow2, U b) {
assert(b >= 0);
modular<T> x = pow2, ret = 1;
for (; b > 0; b /= 2) {
if (b % 2 == 1) ret *= x;
x *= x;
}
return ret;
}
template <typename T>
std::string to_string(const modular<T>& pow2) {
return std::to_string(pow2());
}
template <typename T>
auto operator<<(std::ostream& os, const T& pow2)
-> std::enable_if_t<is_modular_v<T>, std::ostream&>{
return os << pow2();
}
template <typename T>
auto operator>>(std::istream& is, T& pow2)
-> std::enable_if_t<is_modular_v<T>, std::istream&> {
long long x; is >> x;
pow2 = T(x);
return is;
}
// using mod_type = int;
// struct variable_mod { static mod_type value; };
// mod_type variable_mod::value;
// mod_type& mod = variable_mod::value;
// using mint = modular< variable_mod >;
constexpr int mod = 998244353;
using mint = modular<std::integral_constant<std::decay_t<decltype(mod)>, mod>>;
int main() {
std::cin.tie(0); std::cin.sync_with_stdio(false);
lint n, m; std::cin >> n >> m;
std::vector<mint>pow2(n+m+1);
pow2.at(0)=1;
for(std::size_t i=1;i<pow2.size();i++){
pow2.at(i)=pow2.at(i-1)*2;
}
mint ans0=pow2.at(n);
mint ans1=1;
for(int i=0;i<n;i++){
ans1*=pow2.at(m)-pow2.at(i);
ans1/=(i+1);
}
mint ans2=1;
for(int i=0;i<n;i++){
ans2*=pow2.at(m)-pow2.at(i);
ans2/=pow2.at(n)-pow2.at(i);
}
std::cout << ans0
<< " " << ans1
<< " " << ans2 << std::endl;
return 0;
}
ngtkana