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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#385173#5809. Min Perimetercmk6665 59ms85280kbC++238.8kb2024-04-10 16:12:582024-04-10 16:13:00

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你现在查看的是最新测评结果

  • [2024-04-10 16:13:00]
  • 评测
  • 测评结果：5
  • 用时：59ms
  • 内存：85280kb
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  • [2024-04-10 16:12:58]
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answer

/*  _              _     _                                             _       __      __      __   
   / \     _   _  | |_  | |__     ___    _ __   _    ___   _ __ ___   | | __  / /_    / /_    / /_  
  / _ \   | | | | | __| | '_ \   / _ \  | '__| (_)  / __| | '_ ` _ \  | |/ / | '_ \  | '_ \  | '_ \ 
 / ___ \  | |_| | | |_  | | | | | (_) | | |     _  | (__  | | | | | | |   <  | (_) | | (_) | | (_) |
/_/   \_\  \__,_|  \__| |_| |_|  \___/  |_|    (_)  \___| |_| |_| |_| |_|\_\  \___/   \___/   \___/ 
[Created Time:       2024-04-10 15:36:35]
[Last Modified Time: 2024-04-10 16:12:12] */
#pragma GCC optimize("Ofast", "unroll-loops")
#include<bits/stdc++.h>
#ifdef LOCAL
#include"debug.h"
#else
#define D(...) ((void)0)
#endif
using namespace std; using ll = long long;
#define For(i, j, k) for ( int i = (j) ; i <= (k) ; i++ )
#define Fol(i, j, k) for ( int i = (j) ; i >= (k) ; i-- )
namespace FastIO
{
// ------------------------------
// #define DISABLE_MMAP
// ------------------------------
#if ( defined(LOCAL) || defined(_WIN32) ) && !defined(DISABLE_MMAP)
#define DISABLE_MMAP
#endif
#ifdef LOCAL
	inline char gc() { return getchar(); }
	inline void pc(char c) { putchar(c); }
#else
#ifdef DISABLE_MMAP
	inline constexpr int _READ_SIZE = 1 << 18;
	inline static char _read_buffer[_READ_SIZE], *_read_ptr = nullptr, *_read_ptr_end = nullptr;
	inline char gc()
	{
		if ( __builtin_expect(_read_ptr == _read_ptr_end, false) )
		{
			_read_ptr = _read_buffer, _read_ptr_end = _read_buffer + fread(_read_buffer, 1, _READ_SIZE, stdin);
			if ( __builtin_expect(_read_ptr == _read_ptr_end, false) ) return EOF;
		}
		return *_read_ptr++;
	}
#else
#include<sys/mman.h>
	inline static const char *_read_ptr = (const char *)mmap(nullptr, 0x7fffffff, 1, 2, 0, 0);
	inline char gc() { return *_read_ptr++; }
#endif
	inline constexpr int _WRITE_SIZE = 1 << 18;
	inline static char _write_buffer[_WRITE_SIZE], *_write_ptr = _write_buffer;
	inline void pc(char c)
	{
		*_write_ptr++ = c;
		if ( __builtin_expect(_write_buffer + _WRITE_SIZE == _write_ptr, false) )
			fwrite(_write_buffer, 1, _write_ptr - _write_buffer, stdout), _write_ptr = _write_buffer;
	}
	inline struct _auto_flush
	{
		inline ~_auto_flush() { fwrite(_write_buffer, 1, _write_ptr - _write_buffer, stdout); }
	}	_auto_flush;
#endif
	template < class T > inline constexpr bool _is_signed = numeric_limits < T >::is_signed;
	template < class T > inline constexpr bool _is_unsigned = numeric_limits < T >::is_integer && !_is_signed < T >;
#if __SIZEOF_LONG__ == 64
	template <> inline constexpr bool _is_signed < __int128 > = true;
	template <> inline constexpr bool _is_unsigned < __uint128_t > = true;
#endif
	inline void read(char &c) { do c = gc(); while ( !isgraph(c) ); }
	inline void read_cstr(char *s)
	{
		char c = gc(); while ( !isgraph(c) ) c = gc();
		while ( isgraph(c) ) *s++ = c, c = gc(); *s = 0;
	}
	inline void read(string &s)
	{
		char c = gc(); s.clear(); while ( !isgraph(c) ) c = gc();
		while ( isgraph(c) ) s.push_back(c), c = gc();
	}
	template < class T, enable_if_t < _is_signed < T >, int > = 0 >
	inline void read(T &x)
	{
		char c = gc(); bool f = true; x = 0;
		while ( !isdigit(c) ) { if ( c == 45 ) f = false; c = gc(); }
		if ( f ) while ( isdigit(c) ) x = x * 10 + ( c & 15 ), c = gc();
		else     while ( isdigit(c) ) x = x * 10 - ( c & 15 ), c = gc();
	}
	template < class T, enable_if_t < _is_unsigned < T >, int > = 0 >
	inline void read(T &x)
	{
		char c = gc(); while ( !isdigit(c) ) c = gc();
		x = 0; while ( isdigit(c) ) x = x * 10 + ( c & 15 ), c = gc();
	}
	inline void write(char c) { pc(c); }
	inline void write_cstr(const char *s) { while ( *s ) pc(*s++); }
	inline void write(const string &s) { for ( char c : s ) pc(c); }
	template < class T, enable_if_t < _is_signed < T >, int > = 0 >
	inline void write(T x)
	{
		char buffer[numeric_limits < T >::digits10 + 1]; int digits = 0;
		if ( x >= 0 )  do buffer[digits++] =  ( x % 10 ) | 48, x /= 10; while ( x );
		else { pc(45); do buffer[digits++] = -( x % 10 ) | 48, x /= 10; while ( x ); }
		while ( digits ) pc(buffer[--digits]);
	}
	template < class T, enable_if_t < _is_unsigned < T >, int > = 0 >
	inline void write(T x)
	{
		char buffer[numeric_limits < T >::digits10]; int digits = 0;
		do buffer[digits++] = ( x % 10 ) | 48, x /= 10; while ( x );
		while ( digits ) pc(buffer[--digits]);
	}
	template < int N > struct _tuple_io_helper
	{
		template < class ...T > static inline void _read(tuple < T... > &x) { _tuple_io_helper < N - 1 >::_read(x), read(get<N - 1>(x)); }
		template < class ...T > static inline void _write(const tuple < T... > &x) { _tuple_io_helper < N - 1 >::_write(x), pc(32), write(get<N - 1>(x)); }
	};
	template <> struct _tuple_io_helper < 1 >
	{
		template < class ...T > static inline void _read(tuple < T... > &x) { read(get<0>(x)); }
		template < class ...T > static inline void _write(const tuple < T... > &x) { write(get<0>(x)); }
	};
	template < class ...T > inline void read(tuple < T... > &x) { _tuple_io_helper < sizeof...(T) >::_read(x); }
	template < class ...T > inline void write(const tuple < T... > &x) { _tuple_io_helper < sizeof...(T) >::_write(x); }
	template < class T1, class T2 > inline void read(pair < T1, T2 > &x) { read(x.first), read(x.second); }
	template < class T1, class T2 > inline void write(const pair < T1, T2 > &x) { write(x.first), pc(32), write(x.second); }
	template < class T1, class ...T2 > inline void read(T1 &x, T2 &...y) { read(x), read(y...); }
	template < class ...T > inline void read_cstr(char *x, T *...y) { read_cstr(x), read_cstr(y...); }
	template < class T1, class ...T2 > inline void write(const T1 &x, const T2 &...y) { write(x), write(y...); }
	template < class ...T > inline void write_cstr(const char *x, const T *...y) { write_cstr(x), write_cstr(y...); }
	template < class T > inline void print(const T &x) { write(x); }
	inline void print_cstr(const char *x) { write_cstr(x); }
	template < class T1, class ...T2 > inline void print(const T1 &x, const T2 &...y) { write(x), pc(32), print(y...); }
	template < class ...T > inline void print_cstr(const char *x, const T *...y) { write_cstr(x), pc(32), print_cstr(y...); }
	inline void println() { pc(10); } inline void println_cstr() { pc(10); }
	template < class ...T > inline void println(const T &...x) { print(x...), pc(10); }
	template < class ...T > inline void println_cstr(const T *...x) { print_cstr(x...), pc(10); }
}	using FastIO::read, FastIO::read_cstr, FastIO::write, FastIO::write_cstr, FastIO::println, FastIO::println_cstr;
mt19937 rnd(chrono::system_clock::now().time_since_epoch().count());
using P = pair < int, int >; using ld = double;
#define fi first
#define se second
struct H
{
	constexpr static int N = 1 << 24;
	struct E { P u; basic_string < int > v; int nxt; } e[1000009];
	int h[N], cnt;
	inline int hsh(const P &x)const { return ( (ll)1e9 * x.fi + x.se ) & ( N - 1 ); }
	inline void clear() { while ( cnt ) h[hsh(e[cnt--].u)] = 0; }
	inline bool count(const P &u)
	{
		for ( int i = h[hsh(u)] ; i ; i = e[i].nxt ) if ( e[i].u == u ) return true;
		return false;
	}
	inline auto &operator[](const P &u)
	{
		int &hu = h[hsh(u)];
		for ( int i = hu ; i ; i = e[i].nxt ) if ( e[i].u == u ) return e[i].v;
		return e[++cnt].u = u, e[cnt].v.clear(), e[cnt].nxt = hu, hu = cnt, e[cnt].v;
	}
}	mp; int n, x, y; P a[1000009], o; ld mn, ans; basic_string < int > nw;
inline ld dis(int x, int y) { return hypot(a[x].fi - a[y].fi, a[x].se - a[y].se); }
inline void build(int n)
{
	mp.clear();
	For(i, 1, n) mp[P(a[i].fi / ( ans / 2 ), a[i].se / ( ans / 2 ))].push_back(i);
}
inline void work()
{
	static int _; cout << "Case #" << ++_ << ": ";
	read(n);
	For(i, 1, n) read(a[i]);
	shuffle(a + 1, a + n + 1, rnd), ans = dis(1, 2) + dis(1, 3) + dis(2, 3), build(3);
	For(i, 4, n)
	{
		x = a[i].fi / ( ans / 2 ), y = a[i].se / ( ans / 2 ), nw.clear(), mn = 1e10l;
		if ( mp.count(o = P(x - 1, y - 1)) ) nw += mp[o];
		if ( mp.count(o = P(x - 1, y    )) ) nw += mp[o];
		if ( mp.count(o = P(x - 1, y + 1)) ) nw += mp[o];
		if ( mp.count(o = P(x    , y - 1)) ) nw += mp[o];
		if ( mp.count(o = P(x    , y    )) ) nw += mp[o];
		if ( mp.count(o = P(x    , y + 1)) ) nw += mp[o];
		if ( mp.count(o = P(x + 1, y - 1)) ) nw += mp[o];
		if ( mp.count(o = P(x + 1, y    )) ) nw += mp[o];
		if ( mp.count(o = P(x + 1, y + 1)) ) nw += mp[o];
		For(j, 0, (int)nw.size() - 1) For(k, j + 1, (int)nw.size() - 1)
			mn = min(mn, dis(i, nw[j]) + dis(i, nw[k]) + dis(nw[j], nw[k]));
		if ( mn < ans ) ans = mn, build(i); else mp[P(x, y)].push_back(i);
	}
	cout << fixed << setprecision(9) << ans << '\n';
}
int main() { int t; read(t); For(tt, 1, t) work(); return 0; }
// 想上GM捏 想上GM捏 想上GM捏 想上GM捏 想上GM捏
// 伊娜可爱捏 伊娜贴贴捏
Source code, Language: C++23

Details

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Subtask #1:

score: 5
Accepted

Test #1:

score: 5
Accepted
time: 59ms
memory: 85280kb

input:

15
3
2 6
7 0
3 0
3
713 269
371 79
455 421
3
91983245 637281504
756917015 312173515
869576338 436726680
10000
14761642 78236002
9047458 47951098
5238002 27761162
476182 2523742
1428546 7571226
26190010 138805810
21904372 116092132
18094916 95902196
43332562 229660522
55237112 292754072
52380020 27761...

output:

Case #1: 17.893012206
Case #2: 1042.844834964
Case #3: 1711142102.791327000
Case #4: 90912.296374033
Case #5: 3.414213562
Case #6: 26.153830342
Case #7: 1701.012681096
Case #8: 2865438.191993871
Case #9: 2020088.337226320
Case #10: 1792106.037292071
Case #11: 2019352.542909729
Case #12: 2530195.7280...

result:

ok correct! (15 test cases)

Subtask #2:

score: 0
Time Limit Exceeded

Test #2:

score: 0
Time Limit Exceeded

input:

15
3
501691275 344354353
167768963 536043860
249445040 557426549
4
1000000000 0
0 0
1000000000 1000000000
0 1000000000
1000000
138925776 669369648
61257680 295150640
170762328 822763944
55483472 267329456
97736936 470914328
84041848 404928904
18463588 88960924
124429360 599523280
95066048 458045504
...

output:

result:
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