結果

問題 No.921 ずんだアロー
ユーザー EmKjpEmKjp
提出日時 2019-11-08 21:50:04
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 103 ms / 2,000 ms
コード長 4,591 bytes
コンパイル時間 2,574 ms
コンパイル使用メモリ 106,124 KB
実行使用メモリ 32,776 KB
最終ジャッジ日時 2023-10-13 03:46:46
合計ジャッジ時間 5,966 ms
ジャッジサーバーID
（参考情報） 		judge12 / judge15
このコードへのチャレンジ（β）

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 62 ms
21,588 KB
testcase_01 AC 62 ms
21,496 KB
testcase_02 AC 62 ms
19,416 KB
testcase_03 AC 63 ms
21,484 KB
testcase_04 AC 62 ms
21,664 KB
testcase_05 AC 63 ms
23,704 KB
testcase_06 AC 71 ms
21,772 KB
testcase_07 AC 70 ms
23,720 KB
testcase_08 AC 62 ms
23,616 KB
testcase_09 AC 62 ms
21,584 KB
testcase_10 AC 98 ms
30,280 KB
testcase_11 AC 100 ms
32,748 KB
testcase_12 AC 78 ms
21,000 KB
testcase_13 AC 93 ms
31,212 KB
testcase_14 AC 97 ms
31,692 KB
testcase_15 AC 85 ms
24,960 KB
testcase_16 AC 73 ms
22,156 KB
testcase_17 AC 97 ms
30,004 KB
testcase_18 AC 101 ms
30,880 KB
testcase_19 AC 102 ms
30,924 KB
testcase_20 AC 101 ms
30,876 KB
testcase_21 AC 103 ms
30,812 KB
testcase_22 AC 102 ms
30,956 KB
testcase_23 AC 103 ms
32,776 KB
testcase_24 AC 102 ms
31,028 KB
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 # 

using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;

using E = System.Linq.Enumerable;

internal partial class Solver {
    public void Run() {
        var n = ni();
        var a = nl(n);

        var dp = new long[n];
        dp[0] = 1;
        for (int i = 1; i < dp.Length; i++) {
            var val = dp[i - 1];
            if (a[i] == a[i - 1]) {
                val = dp[i - 1] + 1;
            } else if (i - 2 >= 0) {
                val = dp[i - 2] + 1;
            }
            dp[i] = val;
        }
        cout.WriteLine(dp.Max());
    }

}

// PREWRITEN CODE BEGINS FROM HERE
internal partial class Solver : Scanner {
    public static void Main(string[] args) {
#if LOCAL
        byte[] inputBuffer = new byte[1000000];
        var inputStream = Console.OpenStandardInput(inputBuffer.Length);
        Console.SetIn(new StreamReader(inputStream, Console.InputEncoding, false, inputBuffer.Length));
        new Solver(Console.In, Console.Out).Run();
#else
        Console.SetOut(new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false });
        new Solver(Console.In, Console.Out).Run();
        Console.Out.Flush();
#endif
    }

#pragma warning disable IDE0052
    private readonly TextReader cin;
    private readonly TextWriter cout;
#pragma warning restore IDE0052

    public Solver(TextReader reader, TextWriter writer)
        : base(reader) {
        cin = reader;
        cout = writer;
    }
    public Solver(string input, TextWriter writer)
        : this(new StringReader(input), writer) {
    }

#pragma warning disable IDE1006
#pragma warning disable IDE0051
    private int ni() { return NextInt(); }
    private int[] ni(int n) { return NextIntArray(n); }
    private long nl() { return NextLong(); }
    private long[] nl(int n) { return NextLongArray(n); }
    private double nd() { return NextDouble(); }
    private double[] nd(int n) { return NextDoubleArray(n); }
    private string ns() { return Next(); }
    private string[] ns(int n) { return NextArray(n); }
#pragma warning restore IDE1006
#pragma warning restore IDE0051
}

internal static class LinqPadExtension {
    public static T Dump<T>(this T obj) {
#if LOCAL
        return LINQPad.Extensions.Dump(obj);
#else
        return obj;
#endif
    }
}

public class Scanner {
    private readonly TextReader Reader;
    private readonly Queue<string> TokenQueue = new Queue<string>();
    private readonly CultureInfo ci = CultureInfo.InvariantCulture;

    public Scanner()
        : this(Console.In) {
    }

    public Scanner(TextReader reader) {
        Reader = reader;
    }

    public int NextInt() { return int.Parse(Next(), ci); }
    public long NextLong() { return long.Parse(Next(), ci); }
    public double NextDouble() { return double.Parse(Next(), ci); }
    public string[] NextArray(int size) {
        string[] array = new string[size];
        for (int i = 0; i < size; i++) {
            array[i] = Next();
        }

        return array;
    }
    public int[] NextIntArray(int size) {
        int[] array = new int[size];
        for (int i = 0; i < size; i++) {
            array[i] = NextInt();
        }

        return array;
    }

    public long[] NextLongArray(int size) {
        long[] array = new long[size];
        for (int i = 0; i < size; i++) {
            array[i] = NextLong();
        }

        return array;
    }

    public double[] NextDoubleArray(int size) {
        double[] array = new double[size];
        for (int i = 0; i < size; i++) {
            array[i] = NextDouble();
        }

        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 static readonly char[] _separator = new[] { ' ', '\t' };
    private bool StockTokens() {
        while (true) {
            string line = Reader.ReadLine();
            if (line == null) {
                return false;
            }

            string[] tokens = line.Split(_separator, StringSplitOptions.RemoveEmptyEntries);
            if (tokens.Length == 0) {
                continue;
            }

            foreach (string token in tokens) {
                TokenQueue.Enqueue(token);
            }

            return true;
        }
    }
}
0