結果
問題 | No.2331 Maximum Quadrilateral |
ユーザー |
![]() |
提出日時 | 2023-05-28 15:00:58 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 14,147 bytes |
コンパイル時間 | 2,456 ms |
コンパイル使用メモリ | 177,504 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-12-27 04:05:41 |
合計ジャッジ時間 | 17,779 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 40 WA * 5 |
ソースコード
#include <algorithm>#include <array>#include <bitset>#include <cassert>#include <chrono>#include <cmath>#include <complex>#include <deque>#include <forward_list>#include <fstream>#include <functional>#include <iomanip>#include <ios>#include <iostream>#include <limits>#include <list>#include <map>#include <numeric>#include <queue>#include <random>#include <set>#include <sstream>#include <stack>#include <string>#include <tuple>#include <type_traits>#include <unordered_map>#include <unordered_set>#include <utility>#include <vector>using namespace std;using lint = long long;using pint = pair<int, int>;using plint = pair<lint, lint>;struct fast_ios { fast_ios(){ cin.tie(nullptr), ios::sync_with_stdio(false), cout << fixed << setprecision(20); }; } fast_ios_;#define ALL(x) (x).begin(), (x).end()#define FOR(i, begin, end) for(int i=(begin),i##_end_=(end);i<i##_end_;i++)#define IFOR(i, begin, end) for(int i=(end)-1,i##_begin_=(begin);i>=i##_begin_;i--)#define REP(i, n) FOR(i,0,n)#define IREP(i, n) IFOR(i,0,n)template <typename T, typename V>void ndarray(vector<T>& vec, const V& val, int len) { vec.assign(len, val); }template <typename T, typename V, typename... Args> void ndarray(vector<T>& vec, const V& val, int len, Args... args) { vec.resize(len), for_each(begin(vec), end(vec), [&](T& v) { ndarray(v, val, args...); }); }template <typename T> bool chmax(T &m, const T q) { return m < q ? (m = q, true) : false; }template <typename T> bool chmin(T &m, const T q) { return m > q ? (m = q, true) : false; }const std::vector<std::pair<int, int>> grid_dxs{{1, 0}, {-1, 0}, {0, 1}, {0, -1}};int floor_lg(long long x) { return x <= 0 ? -1 : 63 - __builtin_clzll(x); }template <class T1, class T2> T1 floor_div(T1 num, T2 den) { return (num > 0 ? num / den : -((-num + den - 1) / den)); }template <class T1, class T2> std::pair<T1, T2> operator+(const std::pair<T1, T2> &l, const std::pair<T1, T2> &r) { return std::make_pair(l.first + r.first, l.second + r.second); }template <class T1, class T2> std::pair<T1, T2> operator-(const std::pair<T1, T2> &l, const std::pair<T1, T2> &r) { return std::make_pair(l.first - r.first, l.second - r.second); }template <class T> std::vector<T> sort_unique(std::vector<T> vec) { sort(vec.begin(), vec.end()), vec.erase(unique(vec.begin(), vec.end()), vec.end()); return vec; }template <class T> int arglb(const std::vector<T> &v, const T &x) { return std::distance(v.begin(), std::lower_bound(v.begin(), v.end(), x)); }template <class T> int argub(const std::vector<T> &v, const T &x) { return std::distance(v.begin(), std::upper_bound(v.begin(), v.end(), x)); }template <class IStream, class T> IStream &operator>>(IStream &is, std::vector<T> &vec) { for (auto &v : vec) is >> v; return is; }template <class OStream, class T> OStream &operator<<(OStream &os, const std::vector<T> &vec);template <class OStream, class T, size_t sz> OStream &operator<<(OStream &os, const std::array<T, sz> &arr);template <class OStream, class T, class TH> OStream &operator<<(OStream &os, const std::unordered_set<T, TH> &vec);template <class OStream, class T, class U> OStream &operator<<(OStream &os, const pair<T, U> &pa);template <class OStream, class T> OStream &operator<<(OStream &os, const std::deque<T> &vec);template <class OStream, class T> OStream &operator<<(OStream &os, const std::set<T> &vec);template <class OStream, class T> OStream &operator<<(OStream &os, const std::multiset<T> &vec);template <class OStream, class T> OStream &operator<<(OStream &os, const std::unordered_multiset<T> &vec);template <class OStream, class T, class U> OStream &operator<<(OStream &os, const std::pair<T, U> &pa);template <class OStream, class TK, class TV> OStream &operator<<(OStream &os, const std::map<TK, TV> &mp);template <class OStream, class TK, class TV, class TH> OStream &operator<<(OStream &os, const std::unordered_map<TK, TV, TH> &mp);template <class OStream, class... T> OStream &operator<<(OStream &os, const std::tuple<T...> &tpl);template <class OStream, class T> OStream &operator<<(OStream &os, const std::vector<T> &vec) { os << '['; for (auto v : vec) os << v << ','; os <<']'; return os; }template <class OStream, class T, size_t sz> OStream &operator<<(OStream &os, const std::array<T, sz> &arr) { os << '['; for (auto v : arr) os << v<< ','; os << ']'; return os; }template <class... T> std::istream &operator>>(std::istream &is, std::tuple<T...> &tpl) { std::apply([&is](auto &&... args) { ((is >> args), ...);},tpl); return is; }template <class OStream, class... T> OStream &operator<<(OStream &os, const std::tuple<T...> &tpl) { os << '('; std::apply([&os](auto &&... args) {((os << args << ','), ...);}, tpl); return os << ')'; }template <class OStream, class T, class TH> OStream &operator<<(OStream &os, const std::unordered_set<T, TH> &vec) { os << '{'; for (auto v : vec) os<< v << ','; os << '}'; return os; }template <class OStream, class T> OStream &operator<<(OStream &os, const std::deque<T> &vec) { os << "deq["; for (auto v : vec) os << v << ','; os <<']'; return os; }template <class OStream, class T> OStream &operator<<(OStream &os, const std::set<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}';return os; }template <class OStream, class T> OStream &operator<<(OStream &os, const std::multiset<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os <<'}'; return os; }template <class OStream, class T> OStream &operator<<(OStream &os, const std::unordered_multiset<T> &vec) { os << '{'; for (auto v : vec) os << v <<','; os << '}'; return os; }template <class OStream, class T, class U> OStream &operator<<(OStream &os, const std::pair<T, U> &pa) { return os << '(' << pa.first << ',' << pa.second << ')'; }template <class OStream, class TK, class TV> OStream &operator<<(OStream &os, const std::map<TK, TV> &mp) { os << '{'; for (auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; }template <class OStream, class TK, class TV, class TH> OStream &operator<<(OStream &os, const std::unordered_map<TK, TV, TH> &mp) { os << '{'; for(auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; }#ifdef HITONANODE_LOCALconst string COLOR_RESET = "\033[0m", BRIGHT_GREEN = "\033[1;32m", BRIGHT_RED = "\033[1;31m", BRIGHT_CYAN = "\033[1;36m", NORMAL_CROSSED = "\033[0;9;37m", RED_BACKGROUND = "\033[1;41m", NORMAL_FAINT = "\033[0;2m";#define dbg(x) std::cerr << BRIGHT_CYAN << #x << COLOR_RESET << " = " << (x) << NORMAL_FAINT << " (L" << __LINE__ << ") " << __FILE__ << COLOR_RESET<< std::endl#define dbgif(cond, x) ((cond) ? std::cerr << BRIGHT_CYAN << #x << COLOR_RESET << " = " << (x) << NORMAL_FAINT << " (L" << __LINE__ << ") " <<__FILE__ << COLOR_RESET << std::endl : std::cerr)#else#define dbg(x) ((void)0)#define dbgif(cond, x) ((void)0)#endif#include <algorithm>#include <cassert>#include <cmath>#include <complex>#include <iostream>#include <tuple>#include <utility>#include <vector>template <typename T_P> struct Point2d {static T_P EPS;static void set_eps(T_P e) { EPS = e; }T_P x, y;Point2d() : x(0), y(0) {}Point2d(T_P x, T_P y) : x(x), y(y) {}Point2d(const std::pair<T_P, T_P> &p) : x(p.first), y(p.second) {}Point2d(const std::complex<T_P> &p) : x(p.real()), y(p.imag()) {}std::complex<T_P> to_complex() const noexcept { return {x, y}; }Point2d operator+(const Point2d &p) const noexcept { return Point2d(x + p.x, y + p.y); }Point2d operator-(const Point2d &p) const noexcept { return Point2d(x - p.x, y - p.y); }Point2d operator*(const Point2d &p) const noexcept {static_assert(std::is_floating_point<T_P>::value == true);return Point2d(x * p.x - y * p.y, x * p.y + y * p.x);}Point2d operator*(T_P d) const noexcept { return Point2d(x * d, y * d); }Point2d operator/(T_P d) const noexcept {static_assert(std::is_floating_point<T_P>::value == true);return Point2d(x / d, y / d);}Point2d inv() const {static_assert(std::is_floating_point<T_P>::value == true);return conj() / norm2();}Point2d operator/(const Point2d &p) const { return (*this) * p.inv(); }bool operator<(const Point2d &r) const noexcept { return x != r.x ? x < r.x : y < r.y; }bool operator==(const Point2d &r) const noexcept { return x == r.x and y == r.y; }bool operator!=(const Point2d &r) const noexcept { return !((*this) == r); }T_P dot(Point2d p) const noexcept { return x * p.x + y * p.y; }T_P det(Point2d p) const noexcept { return x * p.y - y * p.x; }T_P absdet(Point2d p) const noexcept { return std::abs(det(p)); }T_P norm() const noexcept {static_assert(std::is_floating_point<T_P>::value == true);return std::sqrt(x * x + y * y);}T_P norm2() const noexcept { return x * x + y * y; }T_P arg() const noexcept { return std::atan2(y, x); }// rotate point/vector by radPoint2d rotate(T_P rad) const noexcept {static_assert(std::is_floating_point<T_P>::value == true);return Point2d(x * std::cos(rad) - y * std::sin(rad), x * std::sin(rad) + y * std::cos(rad));}Point2d normalized() const {static_assert(std::is_floating_point<T_P>::value == true);return (*this) / this->norm();}Point2d conj() const noexcept { return Point2d(x, -y); }template <class IStream> friend IStream &operator>>(IStream &is, Point2d &p) {T_P x, y;is >> x >> y;p = Point2d(x, y);return is;}template <class OStream> friend OStream &operator<<(OStream &os, const Point2d &p) {return os << '(' << p.x << ',' << p.y << ')';}};template <> double Point2d<double>::EPS = 1e-9;template <> long double Point2d<long double>::EPS = 1e-12;template <> long long Point2d<long long>::EPS = 0;template <typename T_P>int ccw(const Point2d<T_P> &a, const Point2d<T_P> &b, const Point2d<T_P> &c) {// a->b->cの曲がり方Point2d<T_P> v1 = b - a;Point2d<T_P> v2 = c - a;if (v1.det(v2) > Point2d<T_P>::EPS) return 1; // 左折if (v1.det(v2) < -Point2d<T_P>::EPS) return -1; // 右折if (v1.dot(v2) < -Point2d<T_P>::EPS) return 2; // c-a-bif (v1.norm() < v2.norm()) return -2; // a-b-creturn 0; // a-c-b}// Convex hull (凸包)// return: IDs of vertices used for convex hull, counterclockwise// include_boundary: If true, interior angle pi is allowedtemplate <typename T_P>std::vector<int> convex_hull(const std::vector<Point2d<T_P>> &ps, bool include_boundary = false) {int n = ps.size();if (n <= 1) return std::vector<int>(n, 0);std::vector<std::pair<Point2d<T_P>, int>> points(n);for (size_t i = 0; i < ps.size(); i++) points[i] = std::make_pair(ps[i], i);std::sort(points.begin(), points.end());int k = 0;std::vector<std::pair<Point2d<T_P>, int>> qs(2 * n);auto ccw_check = [&](int c) { return include_boundary ? (c == -1) : (c <= 0); };for (int i = 0; i < n; i++) {while (k > 1 and ccw_check(ccw(qs[k - 2].first, qs[k - 1].first, points[i].first))) k--;qs[k++] = points[i];}for (int i = n - 2, t = k; i >= 0; i--) {while (k > t and ccw_check(ccw(qs[k - 2].first, qs[k - 1].first, points[i].first))) k--;qs[k++] = points[i];}std::vector<int> ret(k - 1);for (int i = 0; i < k - 1; i++) ret[i] = qs[i].second;return ret;}// Solve r1 + t1 * v1 == r2 + t2 * v2template <typename T_P, typename std::enable_if<std::is_floating_point<T_P>::value>::type * = nullptr>Point2d<T_P> lines_crosspoint(Point2d<T_P> r1, Point2d<T_P> v1, Point2d<T_P> r2, Point2d<T_P> v2) {static_assert(std::is_floating_point<T_P>::value == true);assert(v2.det(v1) != 0);return r1 + v1 * (v2.det(r2 - r1) / v2.det(v1));}// Whether two segments s1t1 & s2t2 intersect or not (endpoints not included)// Google Code Jam 2013 Round 3 - Rural Planning// Google Code Jam 2021 Round 3 - Fence Designtemplate <typename T>bool intersect_open_segments(Point2d<T> s1, Point2d<T> t1, Point2d<T> s2, Point2d<T> t2) {if (s1 == t1 or s2 == t2) return false; // Not segment but pointint nbad = 0;for (int t = 0; t < 2; t++) {Point2d<T> v1 = t1 - s1, v2 = t2 - s2;T den = v2.det(v1);if (den == 0) {if (s1.det(v1) == s2.det(v1)) {auto L1 = s1.dot(v1), R1 = t1.dot(v1);auto L2 = s2.dot(v1), R2 = t2.dot(v1);if (L1 > R1) std::swap(L1, R1);if (L2 > R2) std::swap(L2, R2);if (L1 > L2) std::swap(L1, L2), std::swap(R1, R2);return R1 > L2;} else {return false;}} else {auto num = v2.det(s2 - s1);if ((0 < num and num < den) or (den < num and num < 0)) nbad++;}std::swap(s1, s2);std::swap(t1, t2);}return nbad == 2;}struct rand_int_ {using lint = long long;std::mt19937 mt;rand_int_() : mt(std::chrono::steady_clock::now().time_since_epoch().count()) {}lint operator()(lint x) { return this->operator()(0, x); } // [0, x)lint operator()(lint l, lint r) {std::uniform_int_distribution<lint> d(l, r - 1);return d(mt);}} rnd;int main() {int N;cin >> N;using Float = lint;using Pt = Point2d<Float>;vector<Pt> P(N);cin >> P;Float ret = 0.0;REP(_, 10) {REP(i, N) REP(j, i) {const auto I = P.at(i), J = P.at(j);auto IJ = J - I;Float detlo = 0, dethi = 0;REP(k, N) {if (i == k or j == k) continue;auto IK = P.at(k) - I;auto de = IJ.det(IK);chmin(detlo, de);chmax(dethi, de);}chmax(ret, dethi - detlo);}shuffle(P.begin(), P.end(), rnd.mt);}cout << ret << endl;}