結果

問題 No.134 走れ！サブロー君
ユーザー tu-satu-sa
提出日時 2018-06-30 05:33:03
言語 C++14
(gcc 12.3.0 + boost 1.83.0)
結果
CE  
(最新)
AC  
(最初)
実行時間 -
コード長 7,535 bytes
コンパイル時間 1,066 ms
コンパイル使用メモリ 121,388 KB
最終ジャッジ日時 2024-11-14 20:31:57
合計ジャッジ時間 1,484 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge2
このコードへのチャレンジ
（要ログイン）
コンパイルエラー時のメッセージ・ソースコードは、提出者また管理者しか表示できないようにしております。（リジャッジ後のコンパイルエラーは公開されます）
ただし、clay言語の場合は開発者のデバッグのため、公開されます。

コンパイルメッセージ
main.cpp: In function 'std::ostream& operator<<(std::ostream&, const iter_pair_t<T>&)':
main.cpp:82:33: error: 'ostream_iterator' was not declared in this scope
   82 |         std::copy(v.beg, v.end, ostream_iterator<typename decltype(v.beg)::reference>(out, " "));
      |                                 ^~~~~~~~~~~~~~~~
main.cpp:29:1: note: 'std::ostream_iterator' is defined in header '<iterator>'; did you forget to '#include <iterator>'?
   28 | #include <array>
  +++ |+#include <iterator>
   29 | using namespace std;
main.cpp:82:85: error: expected '(' before '>' token
   82 |         std::copy(v.beg, v.end, ostream_iterator<typename decltype(v.beg)::reference>(out, " "));
      |                                                                                     ^
      |                                                                                     (

ソースコード

diff # 

////////////////////////////////////////
///  tu3 pro-con template            ///
////////////////////////////////////////
#include <cassert>
#include <cstdio>
#include <cstring>
#include <cmath>
#include <iostream>
#include <iomanip>
#include <sstream>
#include <algorithm>
#include <numeric>
#include <functional>
#include <vector>
#include <queue>
#include <string>
#include <complex>
#include <stack>
#include <set>
#include <map>
#include <list>
#include <unordered_map>
#include <unordered_set>
#include <bitset>
#include <regex>
#include <type_traits>
#include <mutex>
#include <array>
using namespace std;

//// MACRO ////
#define countof(a) (sizeof(a)/sizeof(a[0]))

#define REP(i,n) for (int i = 0; i < (n); i++)
#define RREP(i,n) for (int i = (n)-1; i >= 0; i--)
#define FOR(i,s,n) for (int i = (s); i < (n); i++)
#define RFOR(i,s,n) for (int i = (n)-1; i >= (s); i--)
#define pos(c,i) c.being() + (i)
#define allof(c) c.begin(), c.end()
#define aallof(a) a, countof(a)
#define partof(c,i,n) c.begin() + (i), c.begin() + (i) + (n)
#define apartof(a,i,n) a + (i), a + (i) + (n)
typedef unsigned int uint;
typedef long long llong;
typedef unsigned long long ullong;
#define long long long

#define EPS 1e-9
#define INF (1L << 28)
#define LINF (1LL << 60)

#define PREDICATE(t,a,exp) [&](const t & a) -> bool { return exp; }
#define COMPARISON_T(t) bool(*)(const t &, const t &)
#define COMPARISON(t,a,b,exp) [&](const t & a, const t & b) -> bool { return exp; }
#define CONVERTER(TSrc,t,TDest,exp) [&](const TSrc &t)->TDest { return exp; }

inline int sign_of(double x) { return abs(x) < EPS ? 0 : x > 0 ? 1 : -1; }
inline bool inRange(int val, int min, int max) { return val >= min && val < max; }
inline bool inRange(double val, double min, double max) { return val - min > -EPS && val - max < EPS; }
inline bool inRange(int x, int y, int W, int H) { return x >= 0 && x < W && y >= 0 && y < H; } // W,H含まない

template <class T> struct vevector : public vector<vector<T>> { vevector(int n = 0, int m = 0, const T &initial = T()) : vector<vector<T>>(n, vector<T>(m, initial)) { } };
template <class T> struct vevevector : public vector<vevector<T>> { vevevector(int n = 0, int m = 0, int l = 0, const T &initial = T()) : vector<vevector<T>>(n, vevector<T>(m, l, initial)) { } };
template <class T> struct vevevevector : public vector<vevevector<T>> { vevevevector(int n = 0, int m = 0, int l = 0, int k = 0, const T &initial = T()) : vector<vevevector<T>>(n, vevevector<T>(m, l, k, initial)) { } };

//// i/o helper ////

namespace std {
	template <class T1, class T2> inline istream & operator >> (istream & in, pair<T1, T2> &p) { in >> p.first >> p.second; return in; }
	template <class T1, class T2> inline ostream & operator << (ostream &out, const pair<T1, T2> &p) { out << p.first << " " << p.second; return out; }
}
template <class T> T read() { T t; cin >> t; return t; }
template <class T> vector<T> read(int n) { vector<T> v; v.reserve(n); REP(i, n) { v.push_back(read<T>()); } return v; }
template <class T> vevector<T> read(int n, int m) { vevector<T> v; REP(i, n) v.push_back(read<T>(m)); return v; }
template <class T> vector<T> readjag() { return read<T>(read<int>()); }
template <class T> vevector<T> readjag(int n) { vevector<T> v; v.reserve(n); REP(i, n) v.push_back(readjag<T>()); return v; }

template <class T> struct iter_pair_t { T beg, end; };
template <class T> iter_pair_t<T> iter_pair(T beg, T end) { return iter_pair_t<T>{beg, end}; }
template <class T> ostream & operator << (ostream &out, const iter_pair_t<T> &v)
{
	std::copy(v.beg, v.end, ostream_iterator<typename decltype(v.beg)::reference>(out, " "));
	return out;
}
template <class T1> ostream & operator << (ostream &out, const vector<T1> &v) { return out << iter_pair(begin(v), end(v)); }
template <class T1> ostream & operator << (ostream &out, const set<T1> &v) { return out << iter_pair(begin(v), end(v)); }
template <class T1, class T2> ostream & operator << (ostream &out, const map<T1, T2> &v) { return out << iter_pair(begin(v), end(v)); }

struct _Reader { istream &cin; template <class T> _Reader operator ,(T &rhs) { cin >> rhs; return *this; } };
struct _Writer { ostream &cout; bool f{ false }; template <class T> _Writer operator ,(const T &rhs) { cout << (f ? " " : "") << rhs; f = true; return *this; } };
#define READ(t,...) t __VA_ARGS__; (_Reader{cin}), __VA_ARGS__
#define WRITE(...) (_Writer{cout}), __VA_ARGS__; cout << '\n'
#define DEBUG(...) (_Writer{cerr}), __VA_ARGS__; cerr << '\n'

void solve();
int main()
{
	//auto temp = ctype<char>::classic_table();
	//vector<ctype<char>::mask> bar(temp, temp + ctype<char>::table_size);
	//bar['.'] |= ctype_base::space;
	//cin.imbue(locale(cin.getloc(), new ctype<char>(bar.data())));

	cin.tie(0);
	ios_base::sync_with_stdio(false);
	cout << setprecision(std::numeric_limits<double>::max_digits10);
	solve();

	return 0;
}

// uint bit permutation
struct BitPermutation
{
#ifdef _MSC_VER
#pragma push_macro("long")
#undef long
	static inline unsigned int __builtin_ctz(unsigned int x) { unsigned long r; _BitScanForward(&r, x); return r; }
#pragma pop_macro("long")
#endif
	using TVal = unsigned int;
	static int bsf(uint x) { return x ? __builtin_ctz(x) : -1; }

	static TVal next_bit_permutation(TVal x) {
		TVal t = x | (x - 1);
		TVal p = (~t & -~t) - 1;
		return (t + 1) | (p >> (bsf(x) + 1));
	}

	struct it {
		TVal val;
		TVal operator *() const { return val; }
		it& operator ++() { val = next_bit_permutation(val); return *this; }
		bool operator != (it o) const { return val != o.val; }
	};

	it s, e;
	BitPermutation(int n, int k)
		: s{ (TVal(1) << k) - 1 }
		, e{ k > 0 ? TVal(1) << n | ((TVal(1) << (k - 1)) - 1) : next_bit_permutation(0) }
	{
		assert(n >= k);
	}
	it begin() const { return s; }
	it end() const { return e; }
};

// ヘルドカープ (改) // TSP (巡回セールスマン問題)など解ける
// O(N^2 * 2^N) (N<=16くらいまで: N=15で700万 N=16で1677万 N=17で3800万)
// TDistance g: g(i,j, n) で 状態nのときの i -> j へのコストを返すファンクタ (0<=i,j<N)
using TCost = double;
template <class TDistance>
TCost HeldKarp(int N, TDistance g, int start = 0, bool needToReturnStart = false)
{
	vevector<TCost> dp(1 << N, N, INF);
	dp[1 << start][start] = 0;

	FOR(i, 1, N)
	{
		for (int n : BitPermutation(N, i))
		{
			REP(from, N)
			{
				if (dp[n][from] >= INF) { continue; }
				REP(to, N)
				{
					if (n & 1 << to) { continue; }
					int next = n | 1 << to;
					TCost dist = dp[n][from] + g(from, to, n);
					if (dist < dp[next][to])
					{
						dp[next][to] = dist;
					}
				}
			}
		}
	}

	TCost ans = INF;
	REP(i, N)
	{
		ans = min(ans, dp[(1 << N) - 1][i] + (needToReturnStart ? g(i, start, (1 << N) - 1) : 0));
	}
	return ans;
}


////////////////////
/// template end ///
////////////////////

void solve()
{
	vector<int> X, Y;
	vector<double> W;
	{
		READ(int, x, y);
		X.push_back(x);
		Y.push_back(y);
		W.push_back(0);
	}

	READ(int, N);

	REP(i, N)
	{
		READ(int, x, y);
		READ(double, w);
		X.push_back(x);
		Y.push_back(y);
		W.push_back(w);
	}
	N++;

	vevector<int> distance(N, N);

	REP(i, N)
	{
		REP(j, N)
		{
			distance[i][j] = abs(X[i] - X[j]) + abs(Y[i] - Y[j]);
		}
	}

	vector<double> weight(1 << N, 0.0);

	REP(i, 1 << N)
	{
		REP(j, N)
		{
			if ( (i & 1 << j) == 0)
			{
				weight[i] += W[j];
			}
		}
	}

	double ans = HeldKarp(N, [&](int i, int j, int n) -> double
	{
		return distance[i][j] * (weight[n] + 100.0) / 120.0 + W[j];
	}, 0, true);

	WRITE(ans);
}
0