結果
問題 | No.1100 Boxes |
ユーザー | KoD |
提出日時 | 2020-06-26 23:12:17 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 150 ms / 2,000 ms |
コード長 | 5,172 bytes |
コンパイル時間 | 731 ms |
コンパイル使用メモリ | 78,472 KB |
実行使用メモリ | 81,648 KB |
最終ジャッジ日時 | 2024-07-04 23:42:50 |
合計ジャッジ時間 | 7,288 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
(要ログイン)
テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 128 ms
81,444 KB |
testcase_01 | AC | 137 ms
81,536 KB |
testcase_02 | AC | 126 ms
81,408 KB |
testcase_03 | AC | 127 ms
81,536 KB |
testcase_04 | AC | 128 ms
81,536 KB |
testcase_05 | AC | 127 ms
81,568 KB |
testcase_06 | AC | 127 ms
81,536 KB |
testcase_07 | AC | 127 ms
81,536 KB |
testcase_08 | AC | 127 ms
81,536 KB |
testcase_09 | AC | 126 ms
81,408 KB |
testcase_10 | AC | 127 ms
81,408 KB |
testcase_11 | AC | 127 ms
81,536 KB |
testcase_12 | AC | 128 ms
81,408 KB |
testcase_13 | AC | 129 ms
81,576 KB |
testcase_14 | AC | 128 ms
81,408 KB |
testcase_15 | AC | 129 ms
81,472 KB |
testcase_16 | AC | 126 ms
81,536 KB |
testcase_17 | AC | 127 ms
81,624 KB |
testcase_18 | AC | 128 ms
81,536 KB |
testcase_19 | AC | 127 ms
81,408 KB |
testcase_20 | AC | 130 ms
81,536 KB |
testcase_21 | AC | 131 ms
81,536 KB |
testcase_22 | AC | 139 ms
81,484 KB |
testcase_23 | AC | 133 ms
81,648 KB |
testcase_24 | AC | 134 ms
81,536 KB |
testcase_25 | AC | 135 ms
81,536 KB |
testcase_26 | AC | 144 ms
81,612 KB |
testcase_27 | AC | 139 ms
81,404 KB |
testcase_28 | AC | 131 ms
81,536 KB |
testcase_29 | AC | 141 ms
81,536 KB |
testcase_30 | AC | 140 ms
81,408 KB |
testcase_31 | AC | 132 ms
81,536 KB |
testcase_32 | AC | 139 ms
81,536 KB |
testcase_33 | AC | 150 ms
81,536 KB |
testcase_34 | AC | 144 ms
81,536 KB |
testcase_35 | AC | 128 ms
81,536 KB |
testcase_36 | AC | 137 ms
81,536 KB |
testcase_37 | AC | 128 ms
81,536 KB |
testcase_38 | AC | 134 ms
81,408 KB |
testcase_39 | AC | 144 ms
81,408 KB |
ソースコード
#include <iostream> #include <algorithm> #include <utility> #include <numeric> #include <vector> #include <array> template <class T, class U> inline bool chmin(T &lhs, const U &rhs) { if (lhs > rhs) { lhs = rhs; return true; } return false; } template <class T, class U> inline bool chmax(T &lhs, const U &rhs) { if (lhs < rhs) { lhs = rhs; return true; } return false; } struct range { using itr = int64_t; struct iterator { itr i; constexpr iterator(itr i_) noexcept : i(i_) { } constexpr void operator ++ () noexcept { ++i; } constexpr itr operator * () const noexcept { return i; } constexpr bool operator != (iterator x) const noexcept { return i != x.i; } }; const iterator l, r; constexpr range(itr l_, itr r_) noexcept : l(l_), r(std::max(l_, r_)) { } constexpr iterator begin() const noexcept { return l; } constexpr iterator end() const noexcept { return r; } }; struct revrange { using itr = int64_t; struct iterator { itr i; constexpr iterator(itr i_) noexcept : i(i_) { } constexpr void operator ++ () noexcept { --i; } constexpr itr operator * () const noexcept { return i; } constexpr bool operator != (iterator x) const noexcept { return i != x.i; } }; const iterator l, r; constexpr revrange(itr l_, itr r_) noexcept : l(l_ - 1), r(std::max(l_, r_) - 1) { } constexpr iterator begin() const noexcept { return r; } constexpr iterator end() const noexcept { return l; } }; using i32 = int32_t; using i64 = int64_t; using u32 = uint32_t; using u64 = uint64_t; constexpr i32 inf32 = (i32(1) << 30) - 1; constexpr i64 inf64 = (i64(1) << 62) - 1; template <uint32_t Modulus> class modular { public: using value_type = uint32_t; using max_type = uint64_t; static constexpr value_type mod = Modulus; static constexpr value_type get_mod() { return mod; } static_assert(mod >= 2, "invalid mod :: smaller than 2"); static_assert(mod < (value_type(1) << 31), "invalid mod :: over 2^31"); template <class T> static constexpr value_type normalize(T value_) { if (value_ < 0) { value_ = -value_; value_ %= mod; if (value_ == 0) return 0; return mod - value_; } return value_ % mod; } private: value_type value; public: constexpr modular(): value(0) { } template <class T> explicit constexpr modular(T value_): value(normalize(value_)) { } template <class T> explicit constexpr operator T() { return static_cast<T>(value); } constexpr value_type get() const { return value; } constexpr modular operator - () const { return modular(mod - value); } constexpr modular operator ~ () const { return inverse(); } constexpr value_type &extract() { return value; } constexpr modular inverse() const { return power(mod - 2); } constexpr modular power(max_type exp) const { modular res(1), mult(*this); while (exp > 0) { if (exp & 1) res *= mult; mult *= mult; exp >>= 1; } return res; } constexpr modular operator + (const modular &rhs) const { return modular(*this) += rhs; } constexpr modular& operator += (const modular &rhs) { if ((value += rhs.value) >= mod) value -= mod; return *this; } constexpr modular operator - (const modular &rhs) const { return modular(*this) -= rhs; } constexpr modular& operator -= (const modular &rhs) { if ((value += mod - rhs.value) >= mod) value -= mod; return *this; } constexpr modular operator * (const modular &rhs) const { return modular(*this) *= rhs; } constexpr modular& operator *= (const modular &rhs) { value = (max_type) value * rhs.value % mod; return *this; } constexpr modular operator / (const modular &rhs) const { return modular(*this) /= rhs; } constexpr modular& operator /= (const modular &rhs) { return (*this) *= rhs.inverse(); } constexpr bool zero() const { return value == 0; } constexpr bool operator == (const modular &rhs) const { return value == rhs.value; } constexpr bool operator != (const modular &rhs) const { return value != rhs.value; } friend std::ostream& operator << (std::ostream &stream, const modular &rhs) { return stream << rhs.value; } }; template <class T, std::size_t N> class factorials { public: using value_type = T; static constexpr std::size_t size = N; public: std::array<value_type, size + 1> fact{}; std::array<value_type, size + 1> fact_inv{}; factorials() { fact.front() = value_type(1); for (std::size_t i = 1; i <= size; ++i) { fact[i] = fact[i - 1] * value_type(i); } fact_inv.back() = ~fact.back(); for (std::size_t i = size; i > 0; --i) { fact_inv[i - 1] = fact_inv[i] * value_type(i); } } value_type operator () (std::size_t n, std::size_t r) const { return fact[n] * fact_inv[n - r] * fact_inv[r]; } }; using m32 = modular<998244353>; factorials<m32, 10000005> fact; int main() { i32 N, K; std::cin >> N >> K; m32 ans = m32(K).power(N); for (auto i: range(0, K + 1)) { ans += m32(2).power(K - i) * m32(i).power(N) * fact(K, i) * m32((i & 1 ? 1 : -1) * (K & 1 ? -1 : 1)); } std::cout << ans / m32(2) << '\n'; return 0; }