結果

問題 No.951 【本日限定】１枚頼むともう１枚無料！
ユーザー EmKjpEmKjp
提出日時 2019-12-15 23:32:31
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 701 ms / 2,000 ms
コード長 5,313 bytes
コンパイル時間 4,799 ms
コンパイル使用メモリ 113,572 KB
実行使用メモリ 43,888 KB
最終ジャッジ日時 2023-09-15 15:54:03
合計ジャッジ時間 27,289 ms
ジャッジサーバーID
（参考情報） 		judge12 / judge13
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 64 ms
23,844 KB
testcase_01 AC 64 ms
21,760 KB
testcase_02 AC 62 ms
21,680 KB
testcase_03 AC 64 ms
21,808 KB
testcase_04 AC 63 ms
19,692 KB
testcase_05 AC 63 ms
21,680 KB
testcase_06 AC 64 ms
21,800 KB
testcase_07 AC 63 ms
23,960 KB
testcase_08 AC 63 ms
19,820 KB
testcase_09 AC 78 ms
26,600 KB
testcase_10 AC 73 ms
23,768 KB
testcase_11 AC 71 ms
23,768 KB
testcase_12 AC 193 ms
40,648 KB
testcase_13 AC 513 ms
43,588 KB
testcase_14 AC 141 ms
43,236 KB
testcase_15 AC 136 ms
43,888 KB
testcase_16 AC 167 ms
41,092 KB
testcase_17 AC 195 ms
43,428 KB
testcase_18 AC 63 ms
21,628 KB
testcase_19 AC 62 ms
23,808 KB
testcase_20 AC 62 ms
21,712 KB
testcase_21 AC 73 ms
23,960 KB
testcase_22 AC 67 ms
24,352 KB
testcase_23 AC 70 ms
22,784 KB
testcase_24 AC 695 ms
40,496 KB
testcase_25 AC 701 ms
42,540 KB
testcase_26 AC 679 ms
40,492 KB
testcase_27 AC 676 ms
42,496 KB
testcase_28 AC 586 ms
40,488 KB
testcase_29 AC 588 ms
42,524 KB
testcase_30 AC 63 ms
21,716 KB
testcase_31 AC 65 ms
23,848 KB
testcase_32 AC 68 ms
22,584 KB
testcase_33 AC 71 ms
23,272 KB
testcase_34 AC 78 ms
25,320 KB
testcase_35 AC 686 ms
42,560 KB
testcase_36 AC 688 ms
42,540 KB
testcase_37 AC 685 ms
40,484 KB
testcase_38 AC 687 ms
40,452 KB
testcase_39 AC 686 ms
42,520 KB
testcase_40 AC 663 ms
42,492 KB
testcase_41 AC 664 ms
40,500 KB
testcase_42 AC 667 ms
42,576 KB
testcase_43 AC 683 ms
42,604 KB
testcase_44 AC 675 ms
38,432 KB
testcase_45 AC 670 ms
40,428 KB
testcase_46 AC 587 ms
42,572 KB
testcase_47 AC 588 ms
40,616 KB
testcase_48 AC 588 ms
42,532 KB
testcase_49 AC 593 ms
42,612 KB
testcase_50 AC 594 ms
38,448 KB
testcase_51 AC 586 ms
42,600 KB
testcase_52 AC 583 ms
42,456 KB
testcase_53 AC 700 ms
40,472 KB
testcase_54 AC 469 ms
42,532 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 static bool UpdateMax<T>(ref T x, T newValue) where T : IComparable<T> {
        if (x.CompareTo(newValue) < 0) { x = newValue; return true; }
        return false;
    }
    public void Run() {
        var n = ni();
        var k = ni();
        var p = new int[n];
        var d = new int[n];
        for (int i = 0; i < n; i++) {
            p[i] = ni();
            d[i] = ni();
        }

        var order = E.Range(0, n).ToArray();
        Array.Sort(order, (i1, i2) => -p[i1].CompareTo(p[i2]));

        var dp = new int[2, k + 1];
        for (int i = 0; i <= k; i++) {
            dp[0, i] = dp[1, i] = -10000000;
        }
        dp[0, 0] = 0;
        foreach (var i in order) {
            var next = dp.Clone() as int[,];
            for (int j = 0; j <= k; j++) {
                if (j + p[i] <= k) {
                    UpdateMax(ref next[1, j + p[i]], dp[0, j] + d[i]);
                }
                UpdateMax(ref next[0, j], dp[1, j] + d[i]);
            }
            dp = next;
            //dp.Dump();
        }
        cout.WriteLine(dp.Cast<int>().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);
        using (var reader = new StreamReader(inputStream, Console.InputEncoding, false, inputBuffer.Length)) {
            Console.SetIn(reader);
            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;
        }
    }
}
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