結果
問題 | No.1574 Swap and Repaint |
ユーザー | KoD |
提出日時 | 2021-06-26 20:08:17 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 5,397 bytes |
コンパイル時間 | 4,042 ms |
コンパイル使用メモリ | 252,088 KB |
実行使用メモリ | 21,268 KB |
最終ジャッジ日時 | 2024-10-03 12:28:25 |
合計ジャッジ時間 | 23,011 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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 | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,820 KB |
testcase_02 | AC | 2 ms
6,816 KB |
testcase_03 | AC | 2 ms
6,820 KB |
testcase_04 | AC | 2 ms
6,820 KB |
testcase_05 | WA | - |
testcase_06 | AC | 2 ms
6,816 KB |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | WA | - |
testcase_34 | WA | - |
testcase_35 | WA | - |
ソースコード
#include <bits/stdc++.h> #include <atcoder/convolution> #include <atcoder/modint> using i32 = std::int32_t; using u32 = std::uint32_t; using i64 = std::int64_t; using u64 = std::uint64_t; using i128 = __int128_t; using u128 = __uint128_t; using isize = std::ptrdiff_t; using usize = std::size_t; class rep { struct Iter { usize itr; constexpr Iter(const usize pos) noexcept : itr(pos) {} constexpr void operator++() noexcept { ++itr; } constexpr bool operator!=(const Iter& other) const noexcept { return itr != other.itr; } constexpr usize operator*() const noexcept { return itr; } }; const Iter first, last; public: explicit constexpr rep(const usize first, const usize last) noexcept : first(first), last(std::max(first, last)) {} constexpr Iter begin() const noexcept { return first; } constexpr Iter end() const noexcept { return last; } }; constexpr u64 ceil_log2(const u64 x) { u64 e = 0; while (((u64)1 << e) < x) ++e; return e; } template <class F> class AutoReallocation { using R = typename decltype(std::declval<F>()((usize)0))::value_type; F func; mutable std::vector<R> data; public: explicit AutoReallocation(F&& f) : func(std::forward<F>(f)), data() {} void reserve(const usize size) const { if (data.size() < size) data = func(((usize)1 << ceil_log2(size))); } R operator[](const usize i) const { reserve(i + 1); return data[i]; } }; template <class F> decltype(auto) auto_realloc(F&& f) { using G = std::decay_t<F>; return AutoReallocation<G>(std::forward<G>(f)); } template <class M> struct ModintUtil { static inline const auto fact = auto_realloc([](const usize n) { std::vector<M> ret(n); ret[0] = M(1); for (const usize i : rep(1, n)) { ret[i] = ret[i - 1] * M(i); } return ret; }); static inline const auto inv = auto_realloc([](const usize n) { std::vector<M> ret(n); if (n == 1) return ret; ret[1] = M(1); for (const usize i : rep(2, n)) { ret[i] = -M(M::mod() / i) * ret[M::mod() % i]; } return ret; }); static inline const auto inv_fact = auto_realloc([](const usize n) { std::vector<M> ret(n); ret[0] = M(1); for (const usize i : rep(1, n)) { ret[i] = ret[i - 1] * inv[i]; } return ret; }); static M binom(const usize n, const usize k) { assert(k <= n); return fact[n] * inv_fact[n - k] * inv_fact[k]; } static M factpow(const usize n, const usize k) { assert(k <= n); return fact[n] * inv_fact[n - k]; } static M homo(const usize n, const usize k) { if (n == 0 and k == 0) return M(1); return binom(n + k - 1, k); } }; template <class T> using Vec = std::vector<T>; using Fp = atcoder::modint998244353; using Util = ModintUtil<Fp>; const auto INV2 = Fp(1) / Fp(2); void main_() { usize N; std::cin >> N; Vec<Fp> A(N); for (auto& x : A) { u32 y; std::cin >> y; x = y; } Vec<Fp> C(N); { Vec<Fp> more(N); for (const auto i : rep(0, N)) { more[i] = Util::factpow(N - 1, (N - 1) - i); } Vec<Fp> pow2(2 * N); pow2[0] = 1; for (const auto i : rep(1, 2 * N)) { pow2[i] = pow2[i - 1] * 2; } Fp sum; for (const auto i : rep(0, N - 1)) { sum += (more[i] - more[i + 1] * INV2) * pow2[2 * ((N - 1) - i) + i]; C[i] = sum; } for (const auto i : rep(0, N)) { C[N - 1] += more[i] * pow2[2 * ((N - 1) - i) + i]; } } A.resize(2 * N); C.resize(2 * N); for (const auto i : rep(0, N)) { A[2 * N - i - 1] = A[i]; C[2 * N - i - 1] = C[i]; } const auto N2 = 2 * N; std::reverse(C.begin(), C.end()); auto F = atcoder::convolution(A, C); for (const auto i : rep(N2, F.size())) { F[i - N2] += F[i]; } F.resize(N2); std::reverse(F.begin(), F.end()); const usize K = std::min(N2, (usize)(5 * std::sqrt(N))); Vec<Vec<Fp>> D_base(K + 1); D_base[0] = {Fp(1)}; for (const auto i : rep(1, K + 1)) { D_base[i].resize(D_base[i - 1].size() + 2); for (const auto j : rep(0, D_base[i - 1].size())) { D_base[i][j] += D_base[i - 1][j]; D_base[i][j + 1] += D_base[i - 1][j] * Fp(N - 3); D_base[i][j + 2] += D_base[i - 1][j]; } } Vec<typename Vec<Fp>::const_iterator> D(K); for (const auto i : rep(0, K)) { D[i] = D_base[i].cbegin() + (D_base[i].size() / 2); } for (const auto i : rep(0, N + 1)) { if (i % K == 0 and i != 0) { const auto tmp = atcoder::convolution(F, D_base[K]); F.assign(N2, 0); for (const auto i : rep(0, tmp.size())) { F[(i < K ? i + N2 - K : i - K)] += tmp[i]; } } Fp ans; const isize width = i % K; for (isize i = -width; i <= width; i += 1) { ans += F[(i < 0 ? i + N2 : i)] * D[width][i]; } std::cout << (ans * INV2).val() << '\n'; } } int main() { std::ios_base::sync_with_stdio(false); std::cin.tie(nullptr); main_(); return 0; }