結果

問題 No.134 走れ!サブロー君
ユーザー eitaho
提出日時 2015-01-22 23:50:28
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 48 ms / 5,000 ms
コード長 3,730 bytes
コンパイル時間 1,634 ms
コンパイル使用メモリ 111,104 KB
実行使用メモリ 20,096 KB
最終ジャッジ日時 2024-10-14 17:10:57
合計ジャッジ時間 2,232 ms
ジャッジサーバーID
(参考情報)
judge4 / judge3
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
other AC * 15
権限があれば一括ダウンロードができます
コンパイルメッセージ
Microsoft (R) Visual C# Compiler version 3.9.0-6.21124.20 (db94f4cc)
Copyright (C) Microsoft Corporation. All rights reserved.

ソースコード

diff #
プレゼンテーションモードにする

using System;
using System.IO;
using System.Text;
using System.Linq;
using System.Diagnostics;
using System.Collections.Generic;
using Enu = System.Linq.Enumerable;
class Program
{
static readonly double INF = 1e100;
int N;
int[] X, Y;
double[] W, Wsum;
void Solve()
{
int SX = reader.Int(), SY = reader.Int();
N = reader.Int();
X = new int[N];
Y = new int[N];
W = new double[N];
for (int i = 0; i < N; i++)
{
X[i] = reader.Int(); Y[i] = reader.Int(); W[i] = reader.Double();
}
Wsum = new double[1 << N];
for (int seen = 0; seen < (1 << N); seen++)
for (int i = 0; i < N; i++)
if ((seen >> i & 1) == 0)
Wsum[seen] += W[i];
var dp = new double[1 << N, N];
Fill(dp, INF);
for (int i = 0; i < N; i++)
dp[1 << i, i] = Cost(SX, SY, i, Wsum[0], W[i]);
for (int seen = 0; seen < (1 << N); seen++)
for (int last = 0; last < N; last++)
if ((seen >> last & 1) == 1)
for (int next = 0; next < N; next++)
if ((seen >> next & 1) == 0)
{
double cost = dp[seen, last] + Cost(X[last], Y[last], next, Wsum[seen], W[next]);
CheckMin(ref dp[seen | (1 << next), next], cost);
}
double ans = Enu.Range(0, N).Min(i => dp[(1 << N) - 1, i] + Cost(SX, SY, i, Wsum[(1 << N) - 1], 0));
Console.WriteLine(ans);
Console.ReadLine();
}
double Cost(int sx, int sy, int next, double wsum, double w)
{
double d = Math.Abs(sx - X[next]) + Math.Abs(sy - Y[next]);
return d * (wsum + 100) / 120.0 + w;
}
void CheckMin(ref double a, double b) { if (b < a) a = b; }
void Fill<T>(T[,] a, T val)
{
for (int i = 0; i < a.GetLength(0); i++)
for (int j = 0; j < a.GetLength(1); j++)
a[i, j] = val;
}
static void Main() { new Program().Solve(); }
Reader reader = new Reader(Console.In);
class Reader
{
private readonly TextReader reader;
private readonly char[] separator = { ' ' };
private readonly StringSplitOptions removeOp = StringSplitOptions.RemoveEmptyEntries;
private string[] A = new string[0];
private int i;
public Reader(TextReader r) { reader = r; }
public bool HasNext() { return Enqueue(); }
public string String() { return Dequeue(); }
public int Int() { return int.Parse(Dequeue()); }
public long Long() { return long.Parse(Dequeue()); }
public double Double() { return double.Parse(Dequeue()); }
public int[] IntLine() { var s = Line(); return s == "" ? new int[0] : Array.ConvertAll(Split(s), int.Parse); }
public int[] IntArray(int N) { return Enumerable.Range(0, N).Select(i => Int()).ToArray(); }
public int[][] IntGrid(int H) { return Enumerable.Range(0, H).Select(i => IntLine()).ToArray(); }
public string[] StringArray(int N) { return Enumerable.Range(0, N).Select(i => Line()).ToArray(); }
public string Line() { return reader.ReadLine().Trim(); }
private string[] Split(string s) { return s.Split(separator, removeOp); }
private bool Enqueue()
{
if (i < A.Length) return true;
string line = reader.ReadLine();
if (line == null) return false;
if (line == "") return Enqueue();
A = Split(line);
i = 0;
return true;
}
private string Dequeue() { Enqueue(); return A[i++]; }
}
}
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