結果
| 問題 | No.2331 Maximum Quadrilateral |
| ユーザー |
 shiomusubi496
|
| 提出日時 | 2023-05-28 14:35:41 |
| 言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 55,277 bytes |
| コンパイル時間 | 3,308 ms |
| コンパイル使用メモリ | 235,160 KB |
| 実行使用メモリ | 5,376 KB |
| 最終ジャッジ日時 | 2024-06-08 05:47:42 |
| 合計ジャッジ時間 | 7,271 ms |
|
ジャッジサーバーID （参考情報） |
judge4 / judge2 |
（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 | 159 ms
5,248 KB |
| testcase_01 | AC | 96 ms
5,376 KB |
| testcase_02 | AC | 113 ms
5,376 KB |
| testcase_03 | AC | 111 ms
5,376 KB |
| testcase_04 | AC | 147 ms
5,376 KB |
| testcase_05 | AC | 154 ms
5,376 KB |
| testcase_06 | AC | 141 ms
5,376 KB |
| testcase_07 | AC | 129 ms
5,376 KB |
| testcase_08 | AC | 89 ms
5,376 KB |
| testcase_09 | AC | 81 ms
5,376 KB |
| testcase_10 | AC | 73 ms
5,376 KB |
| testcase_11 | AC | 80 ms
5,376 KB |
| testcase_12 | AC | 74 ms
5,376 KB |
| testcase_13 | AC | 82 ms
5,376 KB |
| testcase_14 | AC | 163 ms
5,376 KB |
| testcase_15 | AC | 14 ms
5,376 KB |
| testcase_16 | AC | 53 ms
5,376 KB |
| testcase_17 | AC | 4 ms
5,376 KB |
| testcase_18 | AC | 18 ms
5,376 KB |
| testcase_19 | AC | 5 ms
5,376 KB |
| testcase_20 | AC | 184 ms
5,376 KB |
| testcase_21 | AC | 174 ms
5,376 KB |
| testcase_22 | AC | 178 ms
5,376 KB |
| testcase_23 | AC | 171 ms
5,376 KB |
| testcase_24 | AC | 178 ms
5,376 KB |
| testcase_25 | AC | 2 ms
5,376 KB |
| testcase_26 | AC | 2 ms
5,376 KB |
| testcase_27 | AC | 2 ms
5,376 KB |
| testcase_28 | AC | 2 ms
5,376 KB |
| testcase_29 | AC | 2 ms
5,376 KB |
| testcase_30 | WA | - |
| testcase_31 | AC | 1 ms
5,376 KB |
| testcase_32 | AC | 2 ms
5,376 KB |
| testcase_33 | AC | 2 ms
5,376 KB |
| testcase_34 | AC | 2 ms
5,376 KB |
| testcase_35 | AC | 1 ms
5,376 KB |
| testcase_36 | AC | 2 ms
5,376 KB |
| testcase_37 | AC | 2 ms
5,376 KB |
| testcase_38 | AC | 1 ms
5,376 KB |
| testcase_39 | AC | 2 ms
5,376 KB |
| testcase_40 | AC | 1 ms
5,376 KB |
| testcase_41 | AC | 1 ms
5,376 KB |
| testcase_42 | WA | - |
| testcase_43 | WA | - |
| testcase_44 | AC | 1 ms
5,376 KB |
| testcase_45 | AC | 2 ms
5,376 KB |
| testcase_46 | WA | - |
ソースコード
#line 2 "library/other/template.hpp"
#include <bits/stdc++.h>
#line 2 "library/template/macros.hpp"
#line 4 "library/template/macros.hpp"
#ifndef __COUNTER__
#define __COUNTER__ __LINE__
#endif
#define REP_SELECTER(a, b, c, d, e, ...) e
#define REP1_0(b, c) REP1_1(b, c)
#define REP1_1(b, c) \
for (ll REP_COUNTER_##c = 0; REP_COUNTER_##c < (ll)(b); ++REP_COUNTER_##c)
#define REP1(b) REP1_0(b, __COUNTER__)
#define REP2(i, b) for (ll i = 0; i < (ll)(b); ++i)
#define REP3(i, a, b) for (ll i = (ll)(a); i < (ll)(b); ++i)
#define REP4(i, a, b, c) for (ll i = (ll)(a); i < (ll)(b); i += (ll)(c))
#define rep(...) REP_SELECTER(__VA_ARGS__, REP4, REP3, REP2, REP1)(__VA_ARGS__)
#define RREP2(i, a) for (ll i = (ll)(a)-1; i >= 0; --i)
#define RREP3(i, a, b) for (ll i = (ll)(a)-1; i >= (ll)(b); --i)
#define RREP4(i, a, b, c) for (ll i = (ll)(a)-1; i >= (ll)(b); i -= (ll)(c))
#define rrep(...) REP_SELECTER(__VA_ARGS__, RREP4, RREP3, RREP2)(__VA_ARGS__)
#define REPS2(i, b) for (ll i = 1; i <= (ll)(b); ++i)
#define REPS3(i, a, b) for (ll i = (ll)(a) + 1; i <= (ll)(b); ++i)
#define REPS4(i, a, b, c) for (ll i = (ll)(a) + 1; i <= (ll)(b); i += (ll)(c))
#define reps(...) REP_SELECTER(__VA_ARGS__, REPS4, REPS3, REPS2)(__VA_ARGS__)
#define RREPS2(i, a) for (ll i = (ll)(a); i > 0; --i)
#define RREPS3(i, a, b) for (ll i = (ll)(a); i > (ll)(b); --i)
#define RREPS4(i, a, b, c) for (ll i = (ll)(a); i > (ll)(b); i -= (ll)(c))
#define rreps(...) \
REP_SELECTER(__VA_ARGS__, RREPS4, RREPS3, RREPS2)(__VA_ARGS__)
#define each_for(...) for (auto&& __VA_ARGS__)
#define each_const(...) for (const auto& __VA_ARGS__)
#define all(v) std::begin(v), std::end(v)
#if __cplusplus >= 201402L
#define rall(v) std::rbegin(v), std::rend(v)
#else
#define rall(v) v.rbegin(), v.rend()
#endif
#if __cpp_constexpr >= 201304L
#define CONSTEXPR constexpr
#else
#define CONSTEXPR
#endif
#if __cpp_if_constexpr >= 201606L
#define IF_CONSTEXPR constexpr
#else
#define IF_CONSTEXPR
#endif
#define IO_BUFFER_SIZE 2048
#line 2 "library/template/alias.hpp"
#line 4 "library/template/alias.hpp"
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using PLL = std::pair<ll, ll>;
template<class T>
using prique = std::priority_queue<T, std::vector<T>, std::greater<T>>;
template<class T> class infinity {
public:
static constexpr T value = std::numeric_limits<T>::max() / 2;
static constexpr T mvalue = std::numeric_limits<T>::min() / 2;
static constexpr T max = std::numeric_limits<T>::max();
static constexpr T min = std::numeric_limits<T>::min();
};
#if __cplusplus <= 201402L
template<class T> constexpr T infinity<T>::value;
template<class T> constexpr T infinity<T>::mvalue;
template<class T> constexpr T infinity<T>::max;
template<class T> constexpr T infinity<T>::min;
#endif
#if __cpp_variable_templates >= 201304L
template<class T> constexpr T INF = infinity<T>::value;
#endif
constexpr ll inf = infinity<ll>::value;
constexpr ld EPS = 1e-8;
constexpr ld PI = 3.1415926535897932384626;
#line 2 "library/template/type_traits.hpp"
#line 5 "library/template/type_traits.hpp"
template<class T, class... Args> struct function_traits_impl {
using result_type = T;
template<std::size_t idx>
using argument_type =
typename std::tuple_element<idx, std::tuple<Args...>>::type;
using argument_tuple = std::tuple<Args...>;
static constexpr std::size_t arg_size() { return sizeof...(Args); }
};
template<class> struct function_traits_helper;
template<class Res, class Tp, class... Args>
struct function_traits_helper<Res (Tp::*)(Args...)> {
using type = function_traits_impl<Res, Args...>;
};
template<class Res, class Tp, class... Args>
struct function_traits_helper<Res (Tp::*)(Args...)&> {
using type = function_traits_impl<Res, Args...>;
};
template<class Res, class Tp, class... Args>
struct function_traits_helper<Res (Tp::*)(Args...) const> {
using type = function_traits_impl<Res, Args...>;
};
template<class Res, class Tp, class... Args>
struct function_traits_helper<Res (Tp::*)(Args...) const&> {
using type = function_traits_impl<Res, Args...>;
};
#if __cpp_noexcept_function_type >= 201510L
template<class Res, class Tp, class... Args>
struct function_traits_helper<Res (Tp::*)(Args...) noexcept> {
using type = function_traits_impl<Res, Args...>;
};
template<class Res, class Tp, class... Args>
struct function_traits_helper<Res (Tp::*)(Args...)& noexcept> {
using type = function_traits_impl<Res, Args...>;
};
template<class Res, class Tp, class... Args>
struct function_traits_helper<Res (Tp::*)(Args...) const noexcept> {
using type = function_traits_impl<Res, Args...>;
};
template<class Res, class Tp, class... Args>
struct function_traits_helper<Res (Tp::*)(Args...) const& noexcept> {
using type = function_traits_impl<Res, Args...>;
};
#endif
template<class F>
using function_traits =
typename function_traits_helper<decltype(&F::operator())>::type;
template<class T>
using is_signed_int =
std::disjunction<std::conjunction<std::is_integral<T>, std::is_signed<T>>,
std::is_same<T, __int128_t>>;
template<class T>
using is_unsigned_int =
std::disjunction<std::conjunction<std::is_integral<T>, std::is_unsigned<T>>,
std::is_same<T, __uint128_t>>;
template<class T>
using is_int = std::disjunction<is_signed_int<T>, is_unsigned_int<T>>;
template<class T>
using make_signed_int = typename std::conditional<
std::is_same<T, __int128_t>::value || std::is_same<T, __uint128_t>::value,
std::common_type<__int128_t>, std::make_signed<T>>::type;
template<class T>
using make_unsigned_int = typename std::conditional<
std::is_same<T, __int128_t>::value || std::is_same<T, __uint128_t>::value,
std::common_type<__uint128_t>, std::make_unsigned<T>>::type;
template<class T, class = void> struct is_range : std::false_type {};
template<class T>
struct is_range<
T,
decltype(all(std::declval<typename std::add_lvalue_reference<T>::type>()),
(void)0)> : std::true_type {};
template<class T, bool = is_range<T>::value>
struct range_rank : std::integral_constant<std::size_t, 0> {};
template<class T>
struct range_rank<T, true>
: std::integral_constant<std::size_t,
range_rank<typename T::value_type>::value + 1> {};
template<std::size_t size> struct int_least {
static_assert(size <= 128, "size must be less than or equal to 128");
using type = typename std::conditional<
size <= 8, std::int_least8_t,
typename std::conditional<
size <= 16, std::int_least16_t,
typename std::conditional<
size <= 32, std::int_least32_t,
typename std::conditional<size <= 64, std::int_least64_t,
__int128_t>::type>::type>::type>::
type;
};
template<std::size_t size> using int_least_t = typename int_least<size>::type;
template<std::size_t size> struct uint_least {
static_assert(size <= 128, "size must be less than or equal to 128");
using type = typename std::conditional<
size <= 8, std::uint_least8_t,
typename std::conditional<
size <= 16, std::uint_least16_t,
typename std::conditional<
size <= 32, std::uint_least32_t,
typename std::conditional<size <= 64, std::uint_least64_t,
__uint128_t>::type>::type>::type>::
type;
};
template<std::size_t size> using uint_least_t = typename uint_least<size>::type;
template<class T>
using double_size_int = int_least<std::numeric_limits<T>::digits * 2 + 1>;
template<class T> using double_size_int_t = typename double_size_int<T>::type;
template<class T>
using double_size_uint = uint_least<std::numeric_limits<T>::digits * 2>;
template<class T> using double_size_uint_t = typename double_size_uint<T>::type;
template<class T>
using double_size =
typename std::conditional<is_signed_int<T>::value, double_size_int<T>,
double_size_uint<T>>::type;
template<class T> using double_size_t = typename double_size<T>::type;
#line 2 "library/template/in.hpp"
#line 4 "library/template/in.hpp"
#include <unistd.h>
#line 8 "library/template/in.hpp"
template<std::size_t buf_size = IO_BUFFER_SIZE> class Reader {
private:
int fd, idx, sz;
bool state;
std::array<char, buf_size> buffer;
inline void read_buf() {
sz = read(fd, buffer.begin(), buf_size);
idx = 0;
if (sz < 0) throw std::runtime_error("input failed");
}
public:
static constexpr int get_buf_size() { return buf_size; }
Reader() noexcept : fd(0), idx(0), sz(0), state(true) {}
Reader(int fd) noexcept : fd(fd), idx(0), sz(0), state(true) {}
Reader(FILE* fp) noexcept : fd(fileno(fp)), idx(0), sz(0), state(true) {}
class iterator {
private:
Reader* reader;
public:
using difference_type = void;
using value_type = void;
using pointer = void;
using reference = void;
using iterator_category = std::input_iterator_tag;
iterator() : reader(nullptr) {}
explicit iterator(Reader& reader) : reader(&reader) {}
explicit iterator(Reader* reader) : reader(reader) {}
iterator& operator++() {
if (reader->idx == reader->sz) reader->read_buf();
++reader->idx;
return *this;
}
iterator operator++(int) {
iterator res = *this;
++(*this);
return res;
}
char operator*() const {
if (reader->idx == reader->sz) reader->read_buf();
if (reader->idx < reader->sz) return reader->buffer[reader->idx];
reader->state = false;
return '\0';
}
bool rdstate() const { return reader->state; }
};
iterator begin() noexcept { return iterator(this); }
};
Reader<> reader(0);
template<class Iterator, std::size_t decimal_precision = 16> class Scanner {
public:
using iterator_type = Iterator;
private:
template<class, class = void> struct has_scan : std::false_type {};
template<class T>
struct has_scan<
T, decltype(std::declval<T>().scan(std::declval<Scanner&>()), (void)0)>
: std::true_type {};
Iterator itr;
public:
Scanner() = default;
Scanner(const Iterator& itr) : itr(itr) {}
char scan_char() {
char c = *itr;
++itr;
return c;
}
Scanner ignore(int n = 1) {
rep (n) ++itr;
return *this;
}
inline void discard_space() {
while (('\t' <= *itr && *itr <= '\r') || *itr == ' ') ++itr;
}
void scan(char& a) {
discard_space();
a = *itr;
++itr;
}
void scan(bool& a) {
discard_space();
a = *itr != '0';
++itr;
}
void scan(std::string& a) {
discard_space();
a.clear();
while ((*itr < '\t' || '\r' < *itr) && *itr != ' ' && *itr != '\0') {
a += *itr;
++itr;
}
}
template<std::size_t len> void scan(std::bitset<len>& a) {
discard_space();
rrep (i, len) {
a[i] = *itr != '0';
++itr;
}
}
template<class T,
typename std::enable_if<is_signed_int<T>::value &&
!has_scan<T>::value>::type* = nullptr>
void scan(T& a) {
discard_space();
if (*itr == '-') {
++itr;
a = 0;
while ('0' <= *itr && *itr <= '9') {
a = a * 10 - (*itr - '0');
++itr;
}
}
else {
a = 0;
while ('0' <= *itr && *itr <= '9') {
a = a * 10 + (*itr - '0');
++itr;
}
}
}
template<class T,
typename std::enable_if<is_unsigned_int<T>::value &&
!has_scan<T>::value>::type* = nullptr>
void scan(T& a) {
discard_space();
a = 0;
while ('0' <= *itr && *itr <= '9') {
a = a * 10 + *itr - '0';
++itr;
}
}
template<class T,
typename std::enable_if<std::is_floating_point<T>::value &&
!has_scan<T>::value>::type* = nullptr>
void scan(T& a) {
discard_space();
bool sgn = false;
if (*itr == '-') {
sgn = true;
++itr;
}
a = 0;
while ('0' <= *itr && *itr <= '9') {
a = a * 10 + *itr - '0';
++itr;
}
if (*itr == '.') {
++itr;
T n = 0, d = 1;
for (int i = 0;
'0' <= *itr && *itr <= '9' && i < (int)decimal_precision;
++i) {
n = n * 10 + *itr - '0';
d *= 10;
++itr;
}
while ('0' <= *itr && *itr <= '9') ++itr;
a += n / d;
}
if (sgn) a = -a;
}
private:
template<std::size_t i, class... Args> void scan(std::tuple<Args...>& a) {
if IF_CONSTEXPR (i < sizeof...(Args)) {
scan(std::get<i>(a));
scan<i + 1, Args...>(a);
}
}
public:
template<class... Args> void scan(std::tuple<Args...>& a) {
scan<0, Args...>(a);
}
template<class T, class U> void scan(std::pair<T, U>& a) {
scan(a.first);
scan(a.second);
}
template<class T,
typename std::enable_if<is_range<T>::value &&
!has_scan<T>::value>::type* = nullptr>
void scan(T& a) {
each_for (i : a) scan(i);
}
template<class T,
typename std::enable_if<has_scan<T>::value>::type* = nullptr>
void scan(T& a) {
a.scan(*this);
}
void operator()() {}
template<class Head, class... Args>
void operator()(Head& head, Args&... args) {
scan(head);
operator()(args...);
}
template<class T> Scanner& operator>>(T& a) {
scan(a);
return *this;
}
explicit operator bool() const { return itr.rdstate(); }
};
Scanner<Reader<>::iterator> scan(reader.begin());
template<class Iterator, std::size_t decimal_precision>
Scanner<Iterator, decimal_precision>&
getline(Scanner<Iterator, decimal_precision>& scan, std::string& a) {
a.clear();
char c;
while ((c = scan.scan_char()) != '\n') {
a += c;
}
return scan;
}
#line 2 "library/template/out.hpp"
#line 8 "library/template/out.hpp"
template<std::size_t buf_size = IO_BUFFER_SIZE> class Writer {
private:
int fd, idx;
std::array<char, buf_size> buffer;
inline void write_buf() {
int num = write(fd, buffer.begin(), idx);
idx = 0;
if (num < 0) throw std::runtime_error("output failed");
}
public:
Writer() noexcept : fd(1), idx(0) {}
Writer(int fd) noexcept : fd(fd), idx(0) {}
Writer(FILE* fp) noexcept : fd(fileno(fp)), idx(0) {}
~Writer() { write_buf(); }
class iterator {
private:
Writer* writer;
public:
using difference_type = void;
using value_type = void;
using pointer = void;
using reference = void;
using iterator_category = std::output_iterator_tag;
iterator() noexcept : writer(nullptr) {}
explicit iterator(Writer& writer) noexcept : writer(&writer) {}
explicit iterator(Writer* writer) noexcept : writer(writer) {}
iterator& operator++() {
++writer->idx;
if (writer->idx == buf_size) writer->write_buf();
return *this;
}
iterator operator++(int) {
iterator res = *this;
++(*this);
return res;
}
char& operator*() const { return writer->buffer[writer->idx]; }
void flush() const { writer->write_buf(); }
};
iterator begin() noexcept { return iterator(this); }
};
Writer<> writer(1), ewriter(2);
template<class Iterator, bool debug = false> class Printer {
public:
using iterator_type = Iterator;
private:
template<class, bool = debug, class = void>
struct has_print : std::false_type {};
template<class T>
struct has_print<T, false,
decltype(std::declval<T>().print(std::declval<Printer&>()),
(void)0)> : std::true_type {};
template<class T>
struct has_print<T, true,
decltype(std::declval<T>().debug(std::declval<Printer&>()),
(void)0)> : std::true_type {};
Iterator itr;
std::size_t decimal_precision;
public:
void print_char(char c) {
*itr = c;
++itr;
}
void flush() { itr.flush(); }
Printer() noexcept = default;
explicit Printer(const Iterator& itr) noexcept
: itr(itr), decimal_precision(16) {}
void set_decimal_precision(std::size_t decimal_precision) {
this->decimal_precision = decimal_precision;
}
void print(char c) {
if IF_CONSTEXPR (debug) print_char('\'');
print_char(c);
if IF_CONSTEXPR (debug) print_char('\'');
}
void print(bool b) { print_char((char)(b + '0')); }
void print(const char* a) {
if IF_CONSTEXPR (debug) print_char('"');
for (; *a != '\0'; ++a) print_char(*a);
if IF_CONSTEXPR (debug) print_char('"');
}
template<std::size_t len> void print(const char (&a)[len]) {
if IF_CONSTEXPR (debug) print_char('"');
for (auto i : a) print_char(i);
if IF_CONSTEXPR (debug) print_char('"');
}
void print(const std::string& a) {
if IF_CONSTEXPR (debug) print_char('"');
for (auto i : a) print_char(i);
if IF_CONSTEXPR (debug) print_char('"');
}
template<std::size_t len> void print(const std::bitset<len>& a) {
rrep (i, len) print_char((char)(a[i] + '0'));
}
template<class T,
typename std::enable_if<is_int<T>::value &&
!has_print<T>::value>::type* = nullptr>
void print(T a) {
if (!a) {
print_char('0');
return;
}
if IF_CONSTEXPR (is_signed_int<T>::value) {
if (a < 0) {
print_char('-');
using U = typename make_unsigned_int<T>::type;
print(static_cast<U>(-static_cast<U>(a)));
return;
}
}
std::string s;
while (a) {
s += (char)(a % 10 + '0');
a /= 10;
}
for (auto i = s.rbegin(); i != s.rend(); ++i) print_char(*i);
}
template<class T,
typename std::enable_if<std::is_floating_point<T>::value &&
!has_print<T>::value>::type* = nullptr>
void print(T a) {
if (a == std::numeric_limits<T>::infinity()) {
print("inf");
return;
}
if (a == -std::numeric_limits<T>::infinity()) {
print("-inf");
return;
}
if (std::isnan(a)) {
print("nan");
return;
}
if (a < 0) {
print_char('-');
a = -a;
}
T b = a;
if (b < 1) {
print_char('0');
}
else {
std::string s;
while (b >= 1) {
s += (char)('0' + (int)std::fmod(b, 10.0));
b /= 10;
}
for (auto i = s.rbegin(); i != s.rend(); ++i) print_char(*i);
}
print_char('.');
rep (decimal_precision) {
a *= 10;
print_char((char)('0' + (int)std::fmod(a, 10.0)));
}
}
private:
template<std::size_t i, class... Args>
void print(const std::tuple<Args...>& a) {
if IF_CONSTEXPR (i < sizeof...(Args)) {
if IF_CONSTEXPR (debug) print_char(',');
print_char(' ');
print(std::get<i>(a));
print<i + 1, Args...>(a);
}
}
public:
template<class... Args> void print(const std::tuple<Args...>& a) {
if IF_CONSTEXPR (debug) print_char('(');
if IF_CONSTEXPR (sizeof...(Args) != 0) print(std::get<0>(a));
print<1, Args...>(a);
if IF_CONSTEXPR (debug) print_char(')');
}
template<class T, class U> void print(const std::pair<T, U>& a) {
if IF_CONSTEXPR (debug) print_char('(');
print(a.first);
if IF_CONSTEXPR (debug) print_char(',');
print_char(' ');
print(a.second);
if IF_CONSTEXPR (debug) print_char(')');
}
template<class T,
typename std::enable_if<is_range<T>::value &&
!has_print<T>::value>::type* = nullptr>
void print(const T& a) {
if IF_CONSTEXPR (debug) print_char('{');
for (auto i = std::begin(a); i != std::end(a); ++i) {
if (i != std::begin(a)) {
if IF_CONSTEXPR (debug) print_char(',');
print_char(' ');
}
print(*i);
}
if IF_CONSTEXPR (debug) print_char('}');
}
template<class T, typename std::enable_if<has_print<T>::value &&
!debug>::type* = nullptr>
void print(const T& a) {
a.print(*this);
}
template<class T, typename std::enable_if<has_print<T>::value &&
debug>::type* = nullptr>
void print(const T& a) {
a.debug(*this);
}
void operator()() {}
template<class Head, class... Args>
void operator()(const Head& head, const Args&... args) {
print(head);
operator()(args...);
}
template<class T> Printer& operator<<(const T& a) {
print(a);
return *this;
}
Printer& operator<<(Printer& (*pf)(Printer&)) { return pf(*this); }
};
template<class Iterator, bool debug>
Printer<Iterator, debug>& endl(Printer<Iterator, debug>& pr) {
pr.print_char('\n');
pr.flush();
return pr;
}
template<class Iterator, bool debug>
Printer<Iterator, debug>& flush(Printer<Iterator, debug>& pr) {
pr.flush();
return pr;
}
struct SetPrec {
int n;
template<class Pr> void print(Pr& pr) const { pr.set_decimal_precision(n); }
template<class Pr> void debug(Pr& pr) const { pr.set_decimal_precision(n); }
};
SetPrec setprec(int n) { return SetPrec{n}; };
Printer<Writer<>::iterator> print(writer.begin()), eprint(ewriter.begin());
template<class T> auto prints(const T& v) -> decltype(print << v, (void)0) {
print << v;
print.print_char('\n');
}
template<class Head, class... Tail>
auto prints(const Head& head, const Tail&... tail)
-> decltype(print << head, (void)0) {
print << head;
print.print_char(' ');
prints(tail...);
}
#ifdef SHIO_LOCAL
Printer<Writer<>::iterator, true> debug(writer.begin()),
edebug(ewriter.begin());
#else
char debug_iterator_character;
class DebugIterator {
public:
DebugIterator() noexcept = default;
DebugIterator& operator++() { return *this; }
DebugIterator& operator++(int) { return *this; }
char& operator*() const { return debug_iterator_character; }
void flush() const {}
};
Printer<DebugIterator> debug, edebug;
#endif
template<class T> auto debugs(const T& v) -> decltype(debug << v, (void)0) {
debug << v;
debug.print_char('\n');
}
template<class Head, class... Tail>
auto debugs(const Head& head, const Tail&... tail)
-> decltype(debug << head, (void)0) {
debug << head;
debug.print_char(' ');
debugs(tail...);
}
#line 2 "library/template/bitop.hpp"
#line 6 "library/template/bitop.hpp"
namespace bitop {
#define KTH_BIT(b, k) (((b) >> (k)) & 1)
#define POW2(k) (1ull << (k))
inline ull next_combination(int n, ull x) {
if (n == 0) return 1;
ull a = x & -x;
ull b = x + a;
return (x & ~b) / a >> 1 | b;
}
#define rep_comb(i, n, k) \
for (ull i = (1ull << (k)) - 1; i < (1ull << (n)); \
i = bitop::next_combination((n), i))
inline CONSTEXPR int msb(ull x) {
int res = x ? 0 : -1;
if (x & 0xFFFFFFFF00000000) x &= 0xFFFFFFFF00000000, res += 32;
if (x & 0xFFFF0000FFFF0000) x &= 0xFFFF0000FFFF0000, res += 16;
if (x & 0xFF00FF00FF00FF00) x &= 0xFF00FF00FF00FF00, res += 8;
if (x & 0xF0F0F0F0F0F0F0F0) x &= 0xF0F0F0F0F0F0F0F0, res += 4;
if (x & 0xCCCCCCCCCCCCCCCC) x &= 0xCCCCCCCCCCCCCCCC, res += 2;
return res + ((x & 0xAAAAAAAAAAAAAAAA) ? 1 : 0);
}
inline CONSTEXPR int ceil_log2(ull x) { return x ? msb(x - 1) + 1 : 0; }
inline CONSTEXPR ull reverse(ull x) {
x = ((x & 0xAAAAAAAAAAAAAAAA) >> 1) | ((x & 0x5555555555555555) << 1);
x = ((x & 0xCCCCCCCCCCCCCCCC) >> 2) | ((x & 0x3333333333333333) << 2);
x = ((x & 0xF0F0F0F0F0F0F0F0) >> 4) | ((x & 0x0F0F0F0F0F0F0F0F) << 4);
x = ((x & 0xFF00FF00FF00FF00) >> 8) | ((x & 0x00FF00FF00FF00FF) << 8);
x = ((x & 0xFFFF0000FFFF0000) >> 16) | ((x & 0x0000FFFF0000FFFF) << 16);
return (x >> 32) | (x << 32);
}
inline CONSTEXPR ull reverse(ull x, int n) { return reverse(x) >> (64 - n); }
} // namespace bitop
inline CONSTEXPR int popcnt(ull x) noexcept {
#if __cplusplus >= 202002L
return std::popcount(x);
#endif
x = (x & 0x5555555555555555) + ((x >> 1) & 0x5555555555555555);
x = (x & 0x3333333333333333) + ((x >> 2) & 0x3333333333333333);
x = (x & 0x0f0f0f0f0f0f0f0f) + ((x >> 4) & 0x0f0f0f0f0f0f0f0f);
x = (x & 0x00ff00ff00ff00ff) + ((x >> 8) & 0x00ff00ff00ff00ff);
x = (x & 0x0000ffff0000ffff) + ((x >> 16) & 0x0000ffff0000ffff);
return (x & 0x00000000ffffffff) + ((x >> 32) & 0x00000000ffffffff);
}
#line 2 "library/template/func.hpp"
#line 6 "library/template/func.hpp"
template<class T, class U, class Comp = std::less<>>
inline constexpr bool chmin(T& a, const U& b,
Comp cmp = Comp()) noexcept(noexcept(cmp(b, a))) {
return cmp(b, a) ? a = b, true : false;
}
template<class T, class U, class Comp = std::less<>>
inline constexpr bool chmax(T& a, const U& b,
Comp cmp = Comp()) noexcept(noexcept(cmp(a, b))) {
return cmp(a, b) ? a = b, true : false;
}
inline CONSTEXPR ll gcd(ll a, ll b) noexcept {
if (a < 0) a = -a;
if (b < 0) b = -b;
while (b) {
const ll c = a;
a = b;
b = c % b;
}
return a;
}
inline CONSTEXPR ll lcm(ll a, ll b) noexcept { return a / gcd(a, b) * b; }
inline CONSTEXPR bool is_prime(ll N) noexcept {
if (N <= 1) return false;
for (ll i = 2; i * i <= N; ++i) {
if (N % i == 0) return false;
}
return true;
}
inline std::vector<ll> prime_factor(ll N) {
std::vector<ll> res;
for (ll i = 2; i * i <= N; ++i) {
while (N % i == 0) {
res.push_back(i);
N /= i;
}
}
if (N != 1) res.push_back(N);
return res;
}
inline CONSTEXPR ll my_pow(ll a, ll b) noexcept {
ll res = 1;
while (b) {
if (b & 1) res *= a;
b >>= 1;
a *= a;
}
return res;
}
inline CONSTEXPR ll mod_pow(ll a, ll b, ll mod) {
assert(mod > 0);
if (mod == 1) return 0;
a %= mod;
ll res = 1;
while (b) {
if (b & 1) (res *= a) %= mod;
b >>= 1;
(a *= a) %= mod;
}
return res;
}
inline PLL extGCD(ll a, ll b) {
const ll n = a, m = b;
ll x = 1, y = 0, u = 0, v = 1;
ll t;
while (b) {
t = a / b;
std::swap(a -= t * b, b);
std::swap(x -= t * u, u);
std::swap(y -= t * v, v);
}
if (x < 0) {
x += m;
y -= n;
}
return {x, y};
}
inline ll mod_inv(ll a, ll mod) {
ll b = mod;
ll x = 1, u = 0;
ll t;
while (b) {
t = a / b;
std::swap(a -= t * b, b);
std::swap(x -= t * u, u);
}
if (x < 0) x += mod;
assert(a == 1);
return x;
}
#line 2 "library/template/util.hpp"
#line 6 "library/template/util.hpp"
template<class F> class RecLambda {
private:
F f;
public:
explicit constexpr RecLambda(F&& f_) : f(std::forward<F>(f_)) {}
template<class... Args>
constexpr auto operator()(Args&&... args)
-> decltype(f(*this, std::forward<Args>(args)...)) {
return f(*this, std::forward<Args>(args)...);
}
};
template<class F> inline constexpr RecLambda<F> rec_lambda(F&& f) {
return RecLambda<F>(std::forward<F>(f));
}
template<class Head, class... Tail> struct multi_dim_vector {
using type = std::vector<typename multi_dim_vector<Tail...>::type>;
};
template<class T> struct multi_dim_vector<T> { using type = T; };
template<class T, class Arg>
constexpr std::vector<T> make_vec(int n, Arg&& arg) {
return std::vector<T>(n, std::forward<Arg>(arg));
}
template<class T, class... Args>
constexpr typename multi_dim_vector<Args..., T>::type make_vec(int n,
Args&&... args) {
return typename multi_dim_vector<Args..., T>::type(
n, make_vec<T>(std::forward<Args>(args)...));
}
template<class T, class Comp = std::less<T>> class presser {
private:
std::vector<T> dat;
Comp cmp;
bool sorted = false;
public:
presser() : presser(Comp()) {}
presser(const Comp& cmp) : cmp(cmp) {}
presser(const std::vector<T>& vec, const Comp& cmp = Comp())
: dat(vec), cmp(cmp) {}
presser(std::vector<T>&& vec, const Comp& cmp = Comp())
: dat(std::move(vec)), cmp(cmp) {}
presser(std::initializer_list<T> il, const Comp& cmp = Comp())
: dat(all(il)), cmp(cmp) {}
void reserve(int n) {
assert(!sorted);
dat.reserve(n);
}
void push_back(const T& v) {
assert(!sorted);
dat.push_back(v);
}
void push_back(T&& v) {
assert(!sorted);
dat.push_back(std::move(v));
}
template<class... Args> void emplace_back(Args&&... args) {
assert(!sorted);
dat.emplace_back(std::forward<Args>(args)...);
}
void push(const std::vector<T>& vec) {
assert(!sorted);
const int n = dat.size();
dat.resize(n + vec.size());
rep (i, vec.size()) dat[n + i] = vec[i];
}
int build() {
assert(!sorted);
sorted = true;
std::sort(all(dat), cmp);
dat.erase(std::unique(all(dat),
[&](const T& a, const T& b) -> bool {
return !cmp(a, b) && !cmp(b, a);
}),
dat.end());
return dat.size();
}
const T& operator[](int k) const& {
assert(sorted);
assert(0 <= k && k < (int)dat.size());
return dat[k];
}
T operator[](int k) && {
assert(sorted);
assert(0 <= k && k < (int)dat.size());
return std::move(dat[k]);
}
int get(const T& val) const {
assert(sorted);
auto itr = std::lower_bound(all(dat), val, cmp);
assert(itr != dat.end() && !cmp(val, *itr));
return itr - dat.begin();
}
int lower_bound(const T& val) const {
assert(sorted);
auto itr = std::lower_bound(all(dat), val, cmp);
return itr - dat.begin();
}
int upper_bound(const T& val) const {
assert(sorted);
auto itr = std::upper_bound(all(dat), val, cmp);
return itr - dat.begin();
}
bool contains(const T& val) const {
assert(sorted);
return std::binary_search(all(dat), val, cmp);
}
std::vector<int> pressed(const std::vector<T>& vec) const {
assert(sorted);
std::vector<int> res(vec.size());
rep (i, vec.size()) res[i] = get(vec[i]);
return res;
}
void press(std::vector<T>& vec) const {
static_assert(std::is_convertible<T, int>::value,
"template argument must be convertible from int type");
assert(sorted);
each_for (i : vec) i = get(i);
}
int size() const {
assert(sorted);
return dat.size();
}
const std::vector<T>& data() const& { return dat; }
std::vector<T> data() && { return std::move(dat); }
};
#line 2 "main.cpp"
#define GEOMETRY_REAL_TYPE ll
#line 2 "library/geometry/All.hpp"
#line 2 "library/geometry/template.hpp"
#line 4 "library/geometry/template.hpp"
#ifdef GEOMETRY_EPS
constexpr ld geom_eps = GEOMETRY_EPS;
#else
constexpr ld geom_eps = EPS;
#endif
#ifdef GEOMETRY_REAL_TYPE
using Real = GEOMETRY_REAL_TYPE;
// a <=> b : cmp(a, b) <=> 0
inline int cmp(Real a, Real b) {
if (a > b) return 1;
if (a < b) return -1;
return 0;
}
#else
using Real = ld;
// a <=> b : cmp(a, b) <=> 0
inline int cmp(ld a, ld b) {
if (a > b + geom_eps) return 1;
if (a < b - geom_eps) return -1;
return 0;
}
#endif
#ifdef GEOMETRY_ANGLE_TYPE
using angle_t = GEOMETRY_ANGLE_TYPE;
#else
using angle_t = ld;
#endif
#line 2 "library/geometry/Point.hpp"
#line 4 "library/geometry/Point.hpp"
class Point {
public:
Real x, y;
Point() : x(0), y(0) {}
Point(Real x, Real y) : x(x), y(y) {}
Point& operator+=(const Point& p) {
x += p.x;
y += p.y;
return *this;
}
Point& operator-=(const Point& p) {
x -= p.x;
y -= p.y;
return *this;
}
Point& operator*=(Real a) {
x *= a;
y *= a;
return *this;
}
Point& operator/=(Real a) {
x /= a;
y /= a;
return *this;
}
Point operator+() const { return *this; }
Point operator-() const { return Point(-x, -y); }
friend Point operator+(const Point& p1, const Point& p2) {
return Point(p1) += p2;
}
friend Point operator-(const Point& p1, const Point& p2) {
return Point(p1) -= p2;
}
friend Point operator*(const Point& p, Real a) { return Point(p) *= a; }
friend Point operator*(Real a, const Point& p) { return Point(p) *= a; }
friend Point operator/(const Point& p, Real a) { return Point(p) /= a; }
friend bool operator==(const Point& p1, const Point& p2) {
return cmp(p1.x, p2.x) == 0 && cmp(p1.y, p2.y) == 0;
}
friend bool operator!=(const Point& p1, const Point& p2) {
return !(p1 == p2);
}
friend bool operator<(const Point& p1, const Point& p2) {
return cmp(p1.x, p2.x) < 0 ||
(cmp(p1.x, p2.x) == 0 && cmp(p1.y, p2.y) < 0);
}
friend bool operator>(const Point& p1, const Point& p2) { return p2 < p1; }
friend bool operator<=(const Point& p1, const Point& p2) {
return !(p2 < p1);
}
friend bool operator>=(const Point& p1, const Point& p2) {
return !(p1 < p2);
}
friend bool comp_arg(const Point& p1, const Point& p2) {
// -pi < theta <= pi
int a1 = p1.y < 0 ? 0 : p1.y > 0 ? 2 : p1.x >= 0 ? 1 : 3;
int a2 = p2.y < 0 ? 0 : p2.y > 0 ? 2 : p2.x >= 0 ? 1 : 3;
if (a1 != a2) return a1 < a2;
return cross(p1, p2) > 0;
}
Real norm() const { return x * x + y * y; }
friend Real norm(const Point& p) { return p.norm(); }
Real abs() const { return sqrt(norm()); }
friend Real abs(const Point& p) { return p.abs(); }
inline angle_t arg() const { return atan2((ld)y, (ld)x); }
friend angle_t arg(const Point& p) { return p.arg(); }
Point& rotate(angle_t theta) {
Real c = cos(theta), s = sin(theta);
Real nx = x * c - y * s, ny = x * s + y * c;
x = nx;
y = ny;
return *this;
}
friend Point rotate(const Point& p, angle_t theta) {
return Point(p).rotate(theta);
}
Point& rotate90() {
Real nx = -y, ny = x;
x = nx;
y = ny;
return *this;
}
friend Point rotate90(const Point& p) { return Point(p).rotate90(); }
// inner product(内積), p1 * p2 = |p1| * |p2| * cos(theta)
friend Real dot(const Point& p1, const Point& p2) {
return p1.x * p2.x + p1.y * p2.y;
}
// outer product(外積), p1 ^ p2 = |p1| * |p2| * sin(theta)
friend Real cross(const Point& p1, const Point& p2) {
return p1.x * p2.y - p1.y * p2.x;
}
template<class Sc> void scan(Sc& scan) { scan >> x >> y; }
template<class Pr> void print(Pr& print) const { print << x << ' ' << y; }
template<class Pr> void debug(Pr& print) const {
print.print_char('(');
print << x;
print.print_char(',');
print << y;
print.print_char(')');
}
};
Real distance(const Point& p1, const Point& p2) { return abs(p1 - p2); }
enum class CCW {
COUNTER_CLOCKWISE = 1,
CLOCKWISE = -1,
ONLINE_BACK = 2,
ONLINE_FRONT = -2,
ON_SEGMENT = 0,
};
CCW ccw(const Point& p0, const Point& p1, const Point& p2) {
Point a = p1 - p0, b = p2 - p0;
if (cmp(cross(a, b), 0) > 0) return CCW::COUNTER_CLOCKWISE;
if (cmp(cross(a, b), 0) < 0) return CCW::CLOCKWISE;
if (cmp(dot(a, b), 0) < 0) return CCW::ONLINE_BACK;
if (a.norm() < b.norm()) return CCW::ONLINE_FRONT;
return CCW::ON_SEGMENT;
}
#line 2 "library/geometry/Line.hpp"
#line 5 "library/geometry/Line.hpp"
class Line {
public:
Real a, b, c; // ax + by + c = 0
Line() : a(0), b(1), c(0) {}
Line(Real a, Real b, Real c) : a(a), b(b), c(c) {}
Line(const Point& p1, const Point& p2) {
a = p2.y - p1.y;
b = p1.x - p2.x;
c = p2.x * p1.y - p1.x * p2.y;
}
friend bool operator==(const Line& l1, const Line& l2) {
return cmp(l1.a * l2.b, l2.a * l1.b) == 0 &&
cmp(l1.b * l2.c, l2.b * l1.c) == 0;
}
friend bool operator!=(const Line& l1, const Line& l2) {
return !(l1 == l2);
}
friend bool operator<(const Line& l1, const Line& l2) {
return cmp(l1.a * l2.b, l2.a * l1.b) < 0 ||
(cmp(l1.a * l2.b, l2.a * l1.b) == 0 &&
cmp(l1.b * l2.c, l2.b * l1.c) < 0);
}
friend bool operator>(const Line& l1, const Line& l2) { return l2 < l1; }
friend bool operator<=(const Line& l1, const Line& l2) {
return !(l2 < l1);
}
friend bool operator>=(const Line& l1, const Line& l2) {
return !(l1 < l2);
}
bool is_on(const Point& p) const {
return cmp(a * p.x + b * p.y + c, 0) == 0;
}
template<class Pr> void debug(Pr& print) const {
print << a;
print.print_char('x');
print.print_char('+');
print << b;
print.print_char('y');
print.print_char('+');
print << c;
print.print_char('=');
print.print_char('0');
}
};
Real distance(const Point& p, const Line& l) {
return std::abs(l.a * p.x + l.b * p.y + l.c) /
std::sqrt(l.a * l.a + l.b * l.b);
}
Real distance(const Line& l, const Point& p) { return distance(p, l); }
// 垂直二等分線
Line perpendicular_bisector(const Point& p1, const Point& p2) {
return Line((p1 + p2) / 2, (p1 + p2) / 2 + (p2 - p1).rotate90());
}
// 平行判定
bool is_parallel(const Line& l1, const Line& l2) {
return cmp(l1.a * l2.b, l2.a * l1.b) == 0;
}
// 直交判定
bool is_orthogonal(const Line& l1, const Line& l2) {
return cmp(l1.a * l2.a + l1.b * l2.b, 0) == 0;
}
// 平行線
Line parallel(const Line& l, const Point& p) {
return Line(l.a, l.b, -l.a * p.x - l.b * p.y);
}
// 垂直線
Line perpendicular(const Line& l, const Point& p) {
return Line(l.b, -l.a, -l.b * p.x + l.a * p.y);
}
// 交叉判定
bool is_intersect(const Line& l1, const Line& l2) {
return l1 == l2 || !is_parallel(l1, l2);
}
// 交点
Point intersection(const Line& l1, const Line& l2) {
assert(!is_parallel(l1, l2));
Real d = l1.a * l2.b - l2.a * l1.b;
return Point((l1.b * l2.c - l2.b * l1.c) / d,
(l1.c * l2.a - l2.c * l1.a) / d);
}
// 射影
Point projection(const Line& l, const Point& p) {
return intersection(l, perpendicular(l, p));
}
// 反射
Point reflection(const Line& l, const Point& p) {
return projection(l, p) * 2 - p;
}
#line 2 "library/geometry/Segment.hpp"
#line 6 "library/geometry/Segment.hpp"
class Segment {
public:
Point p1, p2;
Segment() = default;
Segment(const Point& p1, const Point& p2) : p1(p1), p2(p2) {}
friend bool operator==(const Segment& s1, const Segment& s2) {
return s1.p1 == s2.p1 && s1.p2 == s2.p2;
}
friend bool operator!=(const Segment& s1, const Segment& s2) {
return !(s1 == s2);
}
friend bool operator<(const Segment& s1, const Segment& s2) {
return s1.p1 < s2.p1 || (s1.p1 == s2.p1 && s1.p2 < s2.p2);
}
friend bool operator>(const Segment& s1, const Segment& s2) {
return s2 < s1;
}
friend bool operator<=(const Segment& s1, const Segment& s2) {
return !(s2 < s1);
}
friend bool operator>=(const Segment& s1, const Segment& s2) {
return !(s1 < s2);
}
bool is_on(const Point& p) const {
return p == p1 || p == p2 || ccw(p1, p2, p) == CCW::ON_SEGMENT;
}
explicit operator Line() const { return Line(p1, p2); }
template<class Pr> void debug(Pr& print) const {
print << p1;
print.print_char('-');
print.print_char('>');
print << p2;
}
template<class Sc> void scan(Sc& scan) { scan >> p1 >> p2; }
};
bool is_parallel(const Segment& s1, const Segment& s2) {
return is_parallel(Line(s1), Line(s2));
}
bool is_orthogonal(const Segment& s1, const Segment& s2) {
return is_orthogonal(Line(s1), Line(s2));
}
Line perpendicular_bisector(const Segment& s) {
return perpendicular_bisector(s.p1, s.p2);
}
bool is_intersect(const Segment& s1, const Segment& s2) {
if (is_parallel(s1, s2)) {
return s1.is_on(s2.p1) || s1.is_on(s2.p2) || s2.is_on(s1.p1) ||
s2.is_on(s1.p2);
}
Point p = intersection(Line(s1), Line(s2));
return s1.is_on(p) && s2.is_on(p);
}
bool is_intersect(const Segment& s1, const Line& l) {
if (!is_intersect(Line(s1), l)) return false;
Point p = intersection(Line(s1), l);
return s1.is_on(p);
}
bool is_intersect(const Line& l, const Segment& s1) {
return is_intersect(s1, l);
}
Real distance(const Point& p, const Segment& s) {
if (s.p1 == s.p2) return distance(p, s.p1);
if (dot(s.p2 - s.p1, p - s.p1) < 0) return distance(p, s.p1);
if (dot(s.p1 - s.p2, p - s.p2) < 0) return distance(p, s.p2);
return distance(p, Line(s));
}
Real distance(const Segment& s, const Point& p) { return distance(p, s); }
Real distance(const Segment& s1, const Segment& s2) {
if (is_intersect(s1, s2)) return 0;
return std::min({distance(s1.p1, s2), distance(s1.p2, s2),
distance(s2.p1, s1), distance(s2.p2, s1)});
}
Real distance(const Segment& s, const Line& l) {
if (is_intersect(s, l)) return 0;
return std::min(distance(s.p1, l), distance(s.p2, l));
}
Real distance(const Line& l, const Segment& s) { return distance(s, l); }
#line 2 "library/geometry/Polygon.hpp"
#line 6 "library/geometry/Polygon.hpp"
class Polygon : public std::vector<Point> {
public:
using std::vector<Point>::vector;
explicit Polygon(const std::vector<Point>& v) : std::vector<Point>(v) {}
explicit Polygon(std::vector<Point>&& v)
: std::vector<Point>(std::move(v)) {}
};
Real area(const Polygon& p) {
const int n = p.size();
Real res = 0;
rep (i, n) {
res += cross(p[i], p[(i + 1) % n]);
}
return res / 2;
}
bool is_convex(const Polygon& p, bool allow_straight = false) {
const int n = p.size();
rep (i, n) {
CCW c = ccw(p[(i + 1) % n], p[i], p[(i + 2) % n]);
if (c == CCW::COUNTER_CLOCKWISE ||
(!allow_straight && c == CCW::ONLINE_BACK)) {
return false;
}
}
return true;
}
bool contains(const Polygon& p, const Point& q, bool true_when_on_edge = true) {
const int n = p.size();
rep (i, n) {
if (p[i] == q) return true_when_on_edge;
Point a = p[i] - q;
Point b = p[(i + 1) % n] - q;
if (cmp(cross(a, b), 0) == 0 && cmp(dot(a, b), 0) <= 0) {
return true_when_on_edge;
}
}
bool res = false;
rep (i, n) {
Point a = p[i] - q;
Point b = p[(i + 1) % n] - q;
if (cmp(a.y, b.y) > 0) std::swap(a, b);
if (cmp(a.y, 0) <= 0 && cmp(b.y, 0) > 0 && cmp(cross(a, b), 0) < 0) {
res = !res;
}
}
return res;
}
Polygon convex_hull(std::vector<Point> A, bool allow_straight = false) {
const int n = A.size();
if (n <= 2) return Polygon{A};
std::sort(A.begin(), A.end(), [](const Point& a, const Point& b) {
return cmp(a.x, b.x) != 0 ? cmp(a.x, b.x) < 0 : cmp(a.y, b.y) < 0;
});
Polygon res;
rep (i, n) {
while ((int)res.size() >= 2) {
CCW c = ccw(res[res.size() - 2], res.back(), A[i]);
if (c == CCW::CLOCKWISE ||
(!allow_straight && c == CCW::ONLINE_FRONT)) {
res.pop_back();
}
else break;
}
res.push_back(A[i]);
}
int t = res.size();
rrep (i, n - 1) {
while ((int)res.size() >= t + 1) {
CCW c = ccw(res[res.size() - 2], res.back(), A[i]);
if (c == CCW::CLOCKWISE ||
(!allow_straight && c == CCW::ONLINE_FRONT)) {
res.pop_back();
}
else break;
}
res.push_back(A[i]);
}
res.pop_back();
return res;
}
std::pair<Point, Point> diameter(const Polygon& p) {
const int n = p.size();
int i = 0, j = 0;
rep (k, n) {
if (cmp(p[k].x, p[i].x) > 0) i = k;
if (cmp(p[k].x, p[j].x) < 0) j = k;
}
Real res = abs(p[i] - p[j]);
int ri = i, rj = j;
int si = i, sj = j;
do {
if (cross(p[(i + 1) % n] - p[i], p[(j + 1) % n] - p[j]) < 0) {
i = (i + 1) % n;
}
else {
j = (j + 1) % n;
}
if (chmax(res, abs(p[i] - p[j]),
[](const Real& a, const Real& b) { return cmp(a, b) < 0; })) {
ri = i;
rj = j;
}
} while (i != si || j != sj);
return {p[ri], p[rj]};
}
std::pair<Point, Point> farthest_pair(const std::vector<Point>& p) {
auto poly = convex_hull(p);
return diameter(poly);
}
std::pair<Point, Point> closest_pair(std::vector<Point> p) {
assert(p.size() >= 2);
const int n = p.size();
std::sort(all(p));
Real res = infinity<Real>::value;
Point a, b;
rec_lambda([&](auto&& self, int l, int r) -> void {
const int m = (l + r) / 2;
if (r - l <= 1) return;
const Real x = p[m].x;
self(l, m);
self(m, r);
std::inplace_merge(
p.begin() + l, p.begin() + m, p.begin() + r,
[](const Point& a, const Point& b) { return cmp(a.y, b.y) < 0; });
std::vector<int> B;
rep (i, l, r) {
if (cmp(std::abs(p[i].x - x), res) >= 0) continue;
rrep (j, B.size()) {
if (cmp(p[i].y - p[B[j]].y, res) >= 0) break;
if (chmin(res, distance(p[i], p[B[j]]),
[](const Real& a, const Real& b) {
return cmp(a, b) < 0;
})) {
a = p[i];
b = p[B[j]];
}
}
B.push_back(i);
}
})(0, n);
return {a, b};
}
// cut with line p0-p1 and return left side
Polygon polygon_cut(const Polygon& p, const Point& p0, const Point& p1) {
const int n = p.size();
Polygon res;
rep (i, n) {
Point a = p[i], b = p[(i + 1) % n];
Real ca = cross(p0 - a, p1 - a);
Real cb = cross(p0 - b, p1 - b);
if (cmp(ca, 0) >= 0) res.push_back(a);
if (cmp(ca, 0) * cmp(cb, 0) < 0) {
res.push_back(intersection(Line(a, b), Line(p0, p1)));
}
}
return res;
}
#line 2 "library/geometry/Triangle.hpp"
#line 6 "library/geometry/Triangle.hpp"
class Triangle {
public:
Point p1, p2, p3;
Triangle() = default;
Triangle(const Point& p1, const Point& p2, const Point& p3)
: p1(p1), p2(p2), p3(p3) {}
Real area() const { return std::abs(cross(p2 - p1, p3 - p1)) / 2; }
Point centroid() const { return (p1 + p2 + p3) / 3; }
Point circumcenter() const {
Line l1 = perpendicular_bisector(p1, p2);
Line l2 = perpendicular_bisector(p2, p3);
return intersection(l1, l2);
}
Real circumradius() const { return distance(p1, circumcenter()); }
Point incenter() const {
Real a = distance(p2, p3);
Real b = distance(p3, p1);
Real c = distance(p1, p2);
return (a * p1 + b * p2 + c * p3) / (a + b + c);
}
Real inradius() const {
return 2 * area() /
(distance(p1, p2) + distance(p2, p3) + distance(p3, p1));
}
Point orthocenter() const {
return intersection(perpendicular(Line(p1, p2), p3),
perpendicular(Line(p2, p3), p1));
}
std::array<Point, 3> excenter() const {
Real a = distance(p2, p3);
Real b = distance(p3, p1);
Real c = distance(p1, p2);
return {(-a * p1 + b * p2 + c * p3) / (-a + b + c),
(a * p1 - b * p2 + c * p3) / (a - b + c),
(a * p1 + b * p2 - c * p3) / (a + b - c)};
}
std::array<Real, 3> exradius() const {
auto a = excenter();
Line l(p1, p2);
return {distance(a[0], l), distance(a[1], l), distance(a[2], l)};
}
Point nine_point_center() const {
return (orthocenter() + circumcenter()) / 2;
}
Real nine_point_radius() const { return circumradius() / 2; }
template<class Sc> void scan(Sc& scan) { scan >> p1 >> p2 >> p3; }
template<class Pr> void debug(Pr& print) const {
print.print_char('{');
print << p1;
print.print_char(' ');
print << p2;
print.print_char(' ');
print << p3;
print.print_char('}');
}
};
#line 2 "library/geometry/Circle.hpp"
#line 6 "library/geometry/Circle.hpp"
class Circle {
public:
Point c;
Real r;
Circle() : c(Point()), r(0) {}
Circle(Point c, Real r) : c(c), r(r) {}
friend bool operator==(const Circle& c1, const Circle& c2) {
return c1.c == c2.c && cmp(c1.r, c2.r) == 0;
}
friend bool operator!=(const Circle& c1, const Circle& c2) {
return !(c1 == c2);
}
friend bool operator<(const Circle& c1, const Circle& c2) {
return c1.c < c2.c || (c1.c == c2.c && cmp(c1.r, c2.r) < 0);
}
friend bool operator>(const Circle& c1, const Circle& c2) {
return c2 < c1;
}
friend bool operator<=(const Circle& c1, const Circle& c2) {
return !(c2 < c1);
}
friend bool operator>=(const Circle& c1, const Circle& c2) {
return !(c1 < c2);
}
template<class Sc> void scan(Sc& scan) { scan >> c >> r; }
template<class Pr> void print(Pr& print) { print << c << ' ' << r; }
template<class Pr> void debug(Pr& print) {
print.print_char('{');
print << c;
print.print_char(':');
print << r;
print.print_char('}');
}
};
enum class circle_relation {
IN = 0, // 内包
INSCRIBE = 1, // 内接
INTERSECT = 2, // 交わる
CIRCUMSCRIBE = 3, // 外接
SEPARATE = 4, // 離れている
SAME = 5, // 等しい
};
circle_relation relation(const Circle& c1, const Circle& c2) {
if (c1 == c2) return circle_relation::SAME;
const Real d = norm(c1.c - c2.c);
const Real r1 = c1.r + c2.r, r2 = c1.r - c2.r;
if (cmp(d, r1 * r1) > 0) return circle_relation::SEPARATE;
if (cmp(d, r1 * r1) == 0) return circle_relation::CIRCUMSCRIBE;
if (cmp(d, r2 * r2) > 0) return circle_relation::INTERSECT;
if (cmp(d, r2 * r2) == 0) return circle_relation::INSCRIBE;
return circle_relation::IN;
}
std::vector<Point> intersections(const Circle& c, const Line& l) {
const Point h = projection(l, c.c);
const Real d = norm(h - c.c);
if (cmp(d, c.r * c.r) > 0) return {};
if (cmp(d, c.r * c.r) == 0) return {h};
const Point v =
Point(l.b, -l.a) *
std::sqrt(std::max<Real>((c.r * c.r - d) / (l.a * l.a + l.b * l.b), 0));
return {h - v, h + v};
}
Line radical_axis(const Circle& c1, const Circle& c2) {
const Real a = c1.c.x, b = c1.c.y, r = c1.r;
const Real c = c2.c.x, d = c2.c.y, s = c2.r;
const Real p = -2 * a + 2 * c, q = -2 * b + 2 * d;
const Real r2 = a * a + b * b - c * c - d * d - r * r + s * s;
return Line(p, q, r2);
}
std::vector<Point> intersections(const Circle& c1, const Circle& c2) {
const Line l = radical_axis(c1, c2);
return intersections(c1, l);
}
Line tangent_at_point(const Circle& c, const Point& p) {
assert(cmp(norm(c.c - p), c.r * c.r) == 0);
const Real a = c.c.x, b = c.c.y;
const Real px = p.x, py = p.y;
return Line(px - a, py - b, (a - px) * a + (b - py) * b - c.r * c.r);
}
std::vector<Point> tangent_points(const Circle& c, const Point& p) {
const Real d = norm(c.c - p);
const Real r2 = c.r * c.r;
if (cmp(d, r2) < 0) return {};
if (cmp(d, r2) == 0) return {p};
const Circle c2(p, std::sqrt(std::max<Real>(d - r2, 0)));
return intersections(c, c2);
}
std::vector<Point> common_tangents(const Circle& c1, const Circle& c2) {
assert(c1 != c2);
const Real d = norm(c1.c - c2.c);
const Real r1 = c1.r, r2 = c2.r;
std::vector<Point> res;
if (cmp(d, (r1 - r2) * (r1 - r2)) == 0) {
const Point v = (c2.c - c1.c) * (r1 / std::sqrt(d));
res.push_back(c1.c + (cmp(r1, r2) < 0 ? -v : v));
}
else if (cmp(d, (r1 - r2) * (r1 - r2)) > 0) {
if (cmp(r1, r2) == 0) {
const Point v = (c2.c - c1.c).rotate90() * (r1 / std::sqrt(d));
res.push_back(c1.c + v);
res.push_back(c1.c - v);
}
else {
const Point v = (c1.c * r2 - c2.c * r1) / (-r1 + r2);
auto ps = tangent_points(c1, v);
std::copy(all(ps), std::back_inserter(res));
}
if (cmp(d, (r1 + r2) * (r1 + r2)) == 0) {
const Point v = (c2.c - c1.c) * (r1 / std::sqrt(d));
res.push_back(c1.c + v);
}
else if (cmp(d, (r1 + r2) * (r1 + r2)) > 0) {
const Point v = (c1.c * r2 + c2.c * r1) / (r1 + r2);
auto ps = tangent_points(c1, v);
std::copy(all(ps), std::back_inserter(res));
}
}
return res;
}
#line 4 "main.cpp"
using namespace std;
int main() {
int N; scan >> N;
vector<Point> ps(N); scan >> ps;
ll ans = 0;
rep (i, N) rep (j, i) {
ll mx1 = -1, mx2 = -1;
rep (k, N) {
if (k == i || k == j) continue;
ll d = cross(ps[i] - ps[j], ps[i] - ps[k]);
if (d > 0) chmax(mx1, d);
else chmax(mx2, -d);
}
chmax(ans, mx1 + mx2);
}
prints(ans);
}