結果
問題 | No.2665 Minimize Inversions of Deque |
ユーザー | zawakasu |
提出日時 | 2024-03-08 21:27:14 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 47 ms / 2,000 ms |
コード長 | 5,826 bytes |
コンパイル時間 | 2,106 ms |
コンパイル使用メモリ | 208,392 KB |
実行使用メモリ | 5,760 KB |
最終ジャッジ日時 | 2024-09-29 18:57:47 |
合計ジャッジ時間 | 5,719 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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
5,248 KB |
testcase_01 | AC | 34 ms
5,248 KB |
testcase_02 | AC | 34 ms
5,248 KB |
testcase_03 | AC | 33 ms
5,248 KB |
testcase_04 | AC | 33 ms
5,248 KB |
testcase_05 | AC | 33 ms
5,248 KB |
testcase_06 | AC | 33 ms
5,248 KB |
testcase_07 | AC | 34 ms
5,248 KB |
testcase_08 | AC | 33 ms
5,248 KB |
testcase_09 | AC | 34 ms
5,248 KB |
testcase_10 | AC | 33 ms
5,248 KB |
testcase_11 | AC | 32 ms
5,248 KB |
testcase_12 | AC | 32 ms
5,248 KB |
testcase_13 | AC | 34 ms
5,248 KB |
testcase_14 | AC | 33 ms
5,248 KB |
testcase_15 | AC | 33 ms
5,248 KB |
testcase_16 | AC | 33 ms
5,248 KB |
testcase_17 | AC | 33 ms
5,248 KB |
testcase_18 | AC | 33 ms
5,248 KB |
testcase_19 | AC | 7 ms
5,248 KB |
testcase_20 | AC | 3 ms
5,248 KB |
testcase_21 | AC | 3 ms
5,248 KB |
testcase_22 | AC | 3 ms
5,248 KB |
testcase_23 | AC | 3 ms
5,248 KB |
testcase_24 | AC | 3 ms
5,248 KB |
testcase_25 | AC | 3 ms
5,248 KB |
testcase_26 | AC | 3 ms
5,248 KB |
testcase_27 | AC | 3 ms
5,248 KB |
testcase_28 | AC | 3 ms
5,248 KB |
testcase_29 | AC | 2 ms
5,248 KB |
testcase_30 | AC | 45 ms
5,376 KB |
testcase_31 | AC | 44 ms
5,248 KB |
testcase_32 | AC | 43 ms
5,248 KB |
testcase_33 | AC | 46 ms
5,248 KB |
testcase_34 | AC | 44 ms
5,248 KB |
testcase_35 | AC | 44 ms
5,632 KB |
testcase_36 | AC | 44 ms
5,760 KB |
testcase_37 | AC | 43 ms
5,248 KB |
testcase_38 | AC | 44 ms
5,248 KB |
testcase_39 | AC | 47 ms
5,504 KB |
ソースコード
#include <bits/stdc++.h> namespace zawa { using i16 = std::int16_t; using i32 = std::int32_t; using i64 = std::int64_t; using i128 = __int128_t; using u8 = std::uint8_t; using u16 = std::uint16_t; using u32 = std::uint32_t; using u64 = std::uint64_t; using usize = std::size_t; } // namespace zawa namespace zawa { void SetFastIO() { std::cin.tie(nullptr)->sync_with_stdio(false); } void SetPrecision(u32 dig) { std::cout << std::fixed << std::setprecision(dig); } } // namespace zawa #include <type_traits> namespace zawa { template <class Group> class FenwickTree { private: using Value = typename Group::Element; usize n_; u32 bitWidth_; std::vector<Value> a_, dat_; constexpr i32 lsb(i32 x) const noexcept { return x & -x; } // a[i] <- a[i] + v void addDat(i32 i, const Value& v) { assert(0 <= i and i < static_cast<i32>(n_)); for ( i++ ; i < static_cast<i32>(dat_.size()) ; i += lsb(i)) { dat_[i] = Group::operation(dat_[i], v); } } // return a[0] + a[1] + .. + a[i - 1] Value product(i32 i) const { assert(0 <= i and i <= static_cast<i32>(n_)); Value res{ Group::identity() }; for ( ; i > 0 ; i -= lsb(i)) { res = Group::operation(res, dat_[i]); } return res; } public: FenwickTree() : n_{}, bitWidth_{}, a_{}, dat_{} {} FenwickTree(usize n) : n_{ n }, bitWidth_{ std::__lg(static_cast<u32>(n)) + 1 }, a_(n), dat_(n + 1, Group::identity()) { dat_.shrink_to_fit(); } FenwickTree(const std::vector<Value>& a) : n_{ a.size() }, bitWidth_{ std::__lg(static_cast<u32>(a.size())) + 1 }, a_(a), dat_(a.size() + 1, Group::identity()) { dat_.shrink_to_fit(); for (i32 i{} ; i < static_cast<i32>(n_) ; i++) { addDat(i, a[i]); } } // return a[i] const Value& get(usize i) const noexcept { assert(i < n_); return a_[i]; } // return a[i] const Value& operator[](usize i) const noexcept { assert(i < n_); return a_[i]; } usize size() const noexcept { return n_; } // a[i] <- a[i] + v void operation(usize i, const Value& v) { assert(i < n_); addDat(i, v); a_[i] = Group::operation(a_[i], v); } // a[i] <- v void set(usize i, const Value& v) { assert(i < n_); addDat(i, Group::operation(Group::inverse(a_[i]), v)); a_[i] = v; } // return a[0] + a[1] + ... + a[r - 1] Value prefixProduct(usize r) const { assert(r <= n_); return product(r); } // return a[l] + a[l + 1] ... + a[r - 1] Value product(usize l, usize r) const { assert(l <= r and r <= n_); return Group::operation(Group::inverse(product(l)), product(r)); } template <class Function> u32 maxRight(usize l, const Function& f) const { static_assert(std::is_convertible_v<decltype(f), std::function<bool(Value)>>, "maxRight's argument f must be function bool(T)"); assert(l < n_); Value sum{ Group::inverse(product(l)) }; u32 r{}; for (u32 bit{ bitWidth_ } ; bit ; ) { bit--; u32 nxt{ r | (1u << bit) }; if (nxt < dat_.size() and f(Group::operation(sum, dat_[nxt]))) { sum = Group::operation(sum, dat_[nxt]); r = std::move(nxt); } } assert(l <= r); return r; } template <class Function> u32 minLeft(usize r, const Function& f) const { static_assert(std::is_convertible_v<decltype(f), std::function<bool(Value)>>, "minLeft's argument f must be function bool(T)"); assert(r <= n_); Value sum{ product(r) }; u32 l{}; for (u32 bit{ bitWidth_ } ; bit ; ) { bit--; u32 nxt{ l | (1u << bit) }; if (nxt <= r and not f(Group::operation(Group::inverse(dat_[nxt]), sum))) { sum = Group::operation(Group::inverse(dat_[nxt]), sum); l = std::move(nxt); } } assert(l <= r); return l; } // debug print friend std::ostream& operator<<(std::ostream& os, const FenwickTree& ft) { for (u32 i{} ; i <= ft.size() ; i++) { os << ft.prefixProduct(i) << (i == ft.size() ? "" : " "); } return os; } }; } // namespace zawa namespace zawa { template <class T> class AdditiveGroup { public: using Element = T; static constexpr T identity() noexcept { return T{}; } static constexpr T operation(const T& l, const T& r) noexcept { return l + r; } static constexpr T inverse(const T& v) noexcept { return -v; } }; } // namespace zawa using namespace zawa; void solve() { int n; std::cin >> n; FenwickTree<AdditiveGroup<int>> fen(n); std::deque<int> ans; long long inv{}; for (int i{} ; i < n ; i++) { int a; std::cin >> a; a--; int front{fen.prefixProduct(a)}; int back{fen.product(a + 1, n)}; if (front < back) { ans.push_front(a + 1); inv += front; } else if (front > back) { ans.push_back(a + 1); inv += back; } else if (ans.size() and ans[0] > a + 1) { ans.push_front(a + 1); inv += front; } else { ans.push_back(a + 1); inv += back; } fen.operation(a, 1); } std::cout << inv << '\n'; for (int i{} ; i < n ; i++) { std::cout << ans[i] << (i + 1 == n ? '\n' : ' '); } } int main() { SetFastIO(); int t; std::cin >> t; for (int _{} ; _ < t ; _++) { solve(); } }