結果
問題 | No.209 Longest Mountain Subsequence |
ユーザー | EmKjp |
提出日時 | 2015-05-15 23:09:55 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 150 ms / 2,000 ms |
コード長 | 4,592 bytes |
コンパイル時間 | 763 ms |
コンパイル使用メモリ | 107,392 KB |
実行使用メモリ | 35,456 KB |
最終ジャッジ日時 | 2024-07-06 04:14:05 |
合計ジャッジ時間 | 1,789 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
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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 | 74 ms
35,072 KB |
testcase_01 | AC | 69 ms
35,200 KB |
testcase_02 | AC | 68 ms
34,944 KB |
testcase_03 | AC | 150 ms
35,456 KB |
testcase_04 | AC | 150 ms
35,328 KB |
testcase_05 | AC | 44 ms
34,688 KB |
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.Collections.Generic; using System.Globalization; using System.Linq; using System.Text; partial class Solver { int?[,] memo1 = new int?[111, 111]; int dfs1(int[] A, int pos, int pre) { if (!memo1[pos, pre].HasValue) { int d = Math.Abs(A[pre] - A[pos]); int maxLeftLength = 0; for (int i = 0; i < pos; i++) { if (A[i] < A[pos] && Math.Abs(A[pos] - A[i]) < d) { maxLeftLength = Math.Max(maxLeftLength, dfs1(A, i, pos)); } } memo1[pos, pre] = maxLeftLength + 1; } return memo1[pos, pre].Value; } int?[,] memo2 = new int?[111, 111]; int dfs2(int[] A, int pos, int pre) { if (!memo2[pos, pre].HasValue) { int d = Math.Abs(A[pos] - A[pre]); int maxRightLength = 0; for (int i = pos + 1; i < A.Length; i++) { if (A[i] < A[pos] && Math.Abs(A[pos] - A[i]) < d) { maxRightLength = Math.Max(maxRightLength, dfs2(A, i, pos)); } } memo2[pos, pre] = maxRightLength + 1; } return memo2[pos, pre].Value; } public void Run() { var t = ni(); while (t-- > 0) { var n = ni(); var A = ni(n); int ans = 0; this.memo1 = new int?[111, 111]; this.memo2 = new int?[111, 111]; for (int i = 0; i < n; i++) { int maxLeftLength = 0; int maxRightLength = 0; for (int j = 0; j < i; j++) { if (A[j] < A[i]) { maxLeftLength = Math.Max(maxLeftLength, dfs1(A, j, i)); } } for (int j = i + 1; j < n; j++) { if (A[j] < A[i]) { maxRightLength = Math.Max(maxRightLength, dfs2(A, j, i)); } } ans = Math.Max(maxLeftLength + maxRightLength + 1, ans); } cout.WriteLine(ans); } } } // PREWRITEN CODE BEGINS FROM HERE partial class Solver : Scanner { public static void Main(string[] args) { new Solver(Console.In, Console.Out).Run(); } TextReader cin; TextWriter cout; public Solver(TextReader reader, TextWriter writer) : base(reader) { this.cin = reader; this.cout = writer; } public Solver(string input, TextWriter writer) : this(new StringReader(input), writer) { } public int ni() { return NextInt(); } public int[] ni(int n) { return NextIntArray(n); } public long nl() { return NextLong(); } public long[] nl(int n) { return NextLongArray(n); } public string ns() { return Next(); } } public class Scanner { private TextReader Reader; private Queue<String> TokenQueue = new Queue<string>(); private CultureInfo ci = CultureInfo.InvariantCulture; public Scanner() : this(Console.In) { } public Scanner(TextReader reader) { this.Reader = reader; } public int NextInt() { return Int32.Parse(Next(), ci); } public long NextLong() { return Int64.Parse(Next(), ci); } public double NextDouble() { return double.Parse(Next(), ci); } public string[] NextArray(int size) { var array = new string[size]; for (int i = 0; i < size; i++) array[i] = Next(); return array; } public int[] NextIntArray(int size) { var array = new int[size]; for (int i = 0; i < size; i++) array[i] = NextInt(); return array; } public long[] NextLongArray(int size) { var array = new long[size]; for (int i = 0; i < size; i++) array[i] = NextLong(); return array; } public String Next() { if (TokenQueue.Count == 0) { if (!StockTokens()) throw new InvalidOperationException(); } return TokenQueue.Dequeue(); } public bool HasNext() { if (TokenQueue.Count > 0) return true; return StockTokens(); } private bool StockTokens() { while (true) { var line = Reader.ReadLine(); if (line == null) return false; var tokens = line.Trim().Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries); if (tokens.Length == 0) continue; foreach (var token in tokens) TokenQueue.Enqueue(token); return true; } } }