結果
問題 | No.5020 Averaging |
ユーザー | risujiroh |
提出日時 | 2024-02-25 16:10:47 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 976 ms / 1,000 ms |
コード長 | 5,434 bytes |
コンパイル時間 | 3,445 ms |
コンパイル使用メモリ | 268,668 KB |
実行使用メモリ | 6,676 KB |
スコア | 81,198,052 |
最終ジャッジ日時 | 2024-02-25 16:11:45 |
合計ジャッジ時間 | 53,982 ms |
ジャッジサーバーID (参考情報) |
judge11 / judge10 |
純コード判定しない問題か言語 |
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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 | 952 ms
6,676 KB |
testcase_01 | AC | 950 ms
6,676 KB |
testcase_02 | AC | 952 ms
6,676 KB |
testcase_03 | AC | 920 ms
6,676 KB |
testcase_04 | AC | 949 ms
6,676 KB |
testcase_05 | AC | 947 ms
6,676 KB |
testcase_06 | AC | 946 ms
6,676 KB |
testcase_07 | AC | 922 ms
6,676 KB |
testcase_08 | AC | 946 ms
6,676 KB |
testcase_09 | AC | 975 ms
6,676 KB |
testcase_10 | AC | 946 ms
6,676 KB |
testcase_11 | AC | 925 ms
6,676 KB |
testcase_12 | AC | 947 ms
6,676 KB |
testcase_13 | AC | 948 ms
6,676 KB |
testcase_14 | AC | 948 ms
6,676 KB |
testcase_15 | AC | 927 ms
6,676 KB |
testcase_16 | AC | 921 ms
6,676 KB |
testcase_17 | AC | 947 ms
6,676 KB |
testcase_18 | AC | 947 ms
6,676 KB |
testcase_19 | AC | 953 ms
6,676 KB |
testcase_20 | AC | 924 ms
6,676 KB |
testcase_21 | AC | 948 ms
6,676 KB |
testcase_22 | AC | 954 ms
6,676 KB |
testcase_23 | AC | 948 ms
6,676 KB |
testcase_24 | AC | 921 ms
6,676 KB |
testcase_25 | AC | 972 ms
6,676 KB |
testcase_26 | AC | 950 ms
6,676 KB |
testcase_27 | AC | 951 ms
6,676 KB |
testcase_28 | AC | 921 ms
6,676 KB |
testcase_29 | AC | 938 ms
6,676 KB |
testcase_30 | AC | 947 ms
6,676 KB |
testcase_31 | AC | 952 ms
6,676 KB |
testcase_32 | AC | 946 ms
6,676 KB |
testcase_33 | AC | 925 ms
6,676 KB |
testcase_34 | AC | 946 ms
6,676 KB |
testcase_35 | AC | 947 ms
6,676 KB |
testcase_36 | AC | 947 ms
6,676 KB |
testcase_37 | AC | 936 ms
6,676 KB |
testcase_38 | AC | 970 ms
6,676 KB |
testcase_39 | AC | 946 ms
6,676 KB |
testcase_40 | AC | 945 ms
6,676 KB |
testcase_41 | AC | 951 ms
6,676 KB |
testcase_42 | AC | 922 ms
6,676 KB |
testcase_43 | AC | 946 ms
6,676 KB |
testcase_44 | AC | 956 ms
6,676 KB |
testcase_45 | AC | 973 ms
6,676 KB |
testcase_46 | AC | 929 ms
6,676 KB |
testcase_47 | AC | 923 ms
6,676 KB |
testcase_48 | AC | 976 ms
6,676 KB |
testcase_49 | AC | 946 ms
6,676 KB |
ソースコード
#if __INCLUDE_LEVEL__ == 0 #include __BASE_FILE__ namespace { void solve() { int n; scan(n); std::vector<i64> a(n), b(n); for (const int i : rep(n)) { scan(a[i], b[i]); } std::vector<int> p(n); std::iota(p.begin(), p.end(), 0); const auto evaluate = [&] { constexpr i64 H = 500'000'000'000'000'000; i64 x = a[p.back()]; i64 y = b[p.back()]; for (const int i : p | views::reverse | views::drop(1)) { x = (x + a[i]) / 2; y = (y + b[i]) / 2; } return std::max(std::abs(x - H), std::abs(y - H)); }; i64 cur = evaluate(); i64 best = cur; auto ans = p; for (const auto& sa : Sa<256>(7 << 20, 1e17, 0.01)) { int i, j; do { i = randint(0, n - 1); j = randint(0, n - 1); } while (i == j); std::swap(p[i], p[j]); const i64 nxt = evaluate(); if (cur + static_cast<i64>(sa.tol) < nxt) { std::swap(p[i], p[j]); } else { cur = nxt; if (chmin(best, cur)) { ans = p; } } } print(len(ans) - 1); int min_i = ans.back(); for (const int i : ans | views::reverse | views::drop(1)) { print(min_i + 1, i + 1); chmin(min_i, i); } } } // namespace int main() { std::ios::sync_with_stdio(false); std::cin.tie(nullptr); std::cout << std::setprecision(DBL_DECIMAL_DIG); solve(); } #else // __INCLUDE_LEVEL__ #include <bits/stdc++.h> namespace xorshift { using u64 = std::uint64_t; using u128 = ::__uint128_t; inline u64 x = std::chrono::steady_clock::now().time_since_epoch().count(); inline u64 next() { x ^= x << 7; x ^= x >> 9; return x; } int randint(int a, int b) { const u64 m = static_cast<u64>(b) - static_cast<u64>(a) + 1; return a + static_cast<int>(u128{next()} * m >> 64); } template <std::ranges::random_access_range R> void shuffle(R&& r) { const int n = static_cast<int>(std::ranges::size(r)); if (n < 2) { return; } for (const int i : std::views::iota(1, n)) { if (const int j = randint(0, i); j < i) { std::ranges::swap(r[i], r[j]); } } } double uniform() { return static_cast<double>(next()) / static_cast<double>(UINT64_MAX); } double uniform(double a, double b) { return a + (b - a) * uniform(); } } // namespace xorshift using xorshift::randint; using xorshift::shuffle; using xorshift::uniform; template <int UpdateInterval = 1> class Sa { public: explicit Sa(std::int64_t n_iters, double start_temp = 0, double end_temp = 0) : n_iters_(n_iters), start_temp_(start_temp), cooling_rate_(start_temp ? end_temp / start_temp : 1), iter_(0), elapsed_(0), temp_(start_temp) { assert(0 <= end_temp && end_temp <= start_temp); } Sa begin() const { return *this; } int end() const { return 0; } bool operator!=(int) const { return iter_ < n_iters_; } void operator++() { if (++iter_ % UpdateInterval == 0) { elapsed_ = static_cast<double>(iter_) / static_cast<double>(n_iters_); temp_ = start_temp_ * std::pow(cooling_rate_, elapsed_); } } auto operator*() const { struct { std::int64_t iter; double elapsed; double temp; double tol; } sa{iter_, elapsed_, temp_, temp_ * -std::log(uniform())}; return sa; } private: std::int64_t n_iters_; double start_temp_; double cooling_rate_; std::int64_t iter_; double elapsed_; double temp_; }; template <class T, class U = T> bool chmin(T& x, U&& y) { return y < x && (x = std::forward<U>(y), true); } template <class T, class U = T> bool chmax(T& x, U&& y) { return x < y && (x = std::forward<U>(y), true); } template <std::signed_integral T = int> T inf() { T ret; std::memset(&ret, 0x3f, sizeof(ret)); return ret; } template <std::floating_point T> T inf() { return std::numeric_limits<T>::infinity(); } template <class T> concept Range = std::ranges::range<T> && !std::convertible_to<T, std::string_view>; template <class T> concept Tuple = std::__is_tuple_like<T>::value && !Range<T>; namespace std { istream& operator>>(istream& is, Range auto&& r) { for (auto&& e : r) { is >> e; } return is; } istream& operator>>(istream& is, Tuple auto&& t) { return apply([&](auto&... xs) -> istream& { return (is >> ... >> xs); }, t); } ostream& operator<<(ostream& os, Range auto&& r) { for (string_view sep = ""; auto&& e : r) { os << exchange(sep, " ") << e; } return os; } ostream& operator<<(ostream& os, Tuple auto&& t) { const auto f = [&](auto&... xs) -> ostream& { [[maybe_unused]] string_view sep = ""; ((os << exchange(sep, " ") << xs), ...); return os; }; return apply(f, t); } } // namespace std void scan(auto&&... xs) { std::cin >> std::tie(xs...); } void print(auto&&... xs) { std::cout << std::tie(xs...) << '\n'; } template <class F> class fix { public: explicit fix(F f) : f_(std::move(f)) {} decltype(auto) operator()(auto&&... xs) const { return f_(std::ref(*this), std::forward<decltype(xs)>(xs)...); } private: F f_; }; inline auto rep(int l, int r) { return std::views::iota(std::min(l, r), r); } inline auto rep(int n) { return rep(0, n); } inline auto rep1(int l, int r) { return rep(l, r + 1); } inline auto rep1(int n) { return rep(1, n + 1); } namespace ranges = std::ranges; namespace views = std::views; using i64 = std::int64_t; #define len(...) static_cast<int>(ranges::size(__VA_ARGS__)) #endif // __INCLUDE_LEVEL__