結果
問題 | No.324 落ちてた閉路グラフ |
ユーザー |
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提出日時 | 2016-01-08 22:34:04 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 2,392 ms / 5,000 ms |
コード長 | 3,294 bytes |
コンパイル時間 | 1,164 ms |
コンパイル使用メモリ | 121,108 KB |
実行使用メモリ | 168,424 KB |
最終ジャッジ日時 | 2024-11-15 19:40:02 |
合計ジャッジ時間 | 31,518 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 34 |
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
using System;using System.IO;using System.Linq;using System.Text;using System.Collections.Generic;using System.Diagnostics;using System.Numerics;using Enu = System.Linq.Enumerable;class Program{static readonly int INF = (int)1e9;public void Solve(){int N = Reader.Int(), Size = Reader.Int();var Val = Reader.IntArray(N);int ans = -INF;for (int useFirst = 0; useFirst < 2; useFirst++){var dp = new int[N + 1, 2, N + 1];Fill(dp, -INF);dp[1, useFirst, useFirst] = 0;for (int i = 1; i < N; i++)for (int used = 0; used < 2; used++)for (int count = 0; count <= i; count++)if (dp[i, used, count] > -INF){CheckMax(ref dp[i + 1, 0, count], dp[i, used, count]);if (count < Size)CheckMax(ref dp[i + 1, 1, count + 1], dp[i, used, count] + Val[i - 1] * used);}if (useFirst == 1) dp[N, 1, Size] += Val[N - 1];CheckMax(ref ans, Math.Max(dp[N, 0, Size], dp[N, 1, Size]));}Console.WriteLine(ans);}void CheckMax(ref int a, int 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++)for (int k = 0; k < a.GetLength(2); k++)a[i, j, k] = val;}}class Entry { static void Main() { new Program().Solve(); } }class Reader{private static TextReader reader = Console.In;private static readonly char[] separator = { ' ' };private static readonly StringSplitOptions op = StringSplitOptions.RemoveEmptyEntries;private static string[] A = new string[0];private static int i;private static void Init() { A = new string[0]; }public static void Set(TextReader r) { reader = r; Init(); }public static void Set(string file) { reader = new StreamReader(file); Init(); }public static bool HasNext() { return CheckNext(); }public static string String() { return Next(); }public static int Int() { return int.Parse(Next()); }public static long Long() { return long.Parse(Next()); }public static double Double() { return double.Parse(Next()); }public static int[] IntLine() { return Array.ConvertAll(Split(Line()), int.Parse); }public static int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); }public static int[][] IntTable(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); }public static string[] StringArray(int N) { return Enu.Range(0, N).Select(i => Next()).ToArray(); }public static string Line() { return reader.ReadLine().Trim(); }private static string[] Split(string s) { return s.Split(separator, op); }private static string Next() { CheckNext(); return A[i++]; }private static bool CheckNext(){if (i < A.Length) return true;string line = reader.ReadLine();if (line == null) return false;if (line == "") return CheckNext();A = Split(line);i = 0;return true;}}