結果

問題 No.1185 完全な3の倍数
ユーザー EmKjpEmKjp
提出日時 2020-08-22 13:31:53
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 77 ms / 2,000 ms
コード長 6,744 bytes
コンパイル時間 1,949 ms
コンパイル使用メモリ 118,204 KB
実行使用メモリ 50,600 KB
最終ジャッジ日時 2024-05-03 10:14:31
合計ジャッジ時間 4,731 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge2
このコードへのチャレンジ
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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 65 ms
45,300 KB
testcase_01 AC 24 ms
25,724 KB
testcase_02 AC 25 ms
27,828 KB
testcase_03 AC 64 ms
49,000 KB
testcase_04 AC 77 ms
49,712 KB
testcase_05 AC 68 ms
45,600 KB
testcase_06 AC 67 ms
50,164 KB
testcase_07 AC 67 ms
48,828 KB
testcase_08 AC 67 ms
50,600 KB
testcase_09 AC 25 ms
25,600 KB
testcase_10 AC 24 ms
25,400 KB
testcase_11 AC 28 ms
25,516 KB
testcase_12 AC 25 ms
27,556 KB
testcase_13 AC 24 ms
23,604 KB
testcase_14 AC 26 ms
25,516 KB
testcase_15 AC 27 ms
25,728 KB
testcase_16 AC 26 ms
25,388 KB
testcase_17 AC 25 ms
25,600 KB
testcase_18 AC 26 ms
25,596 KB
testcase_19 AC 39 ms
31,096 KB
testcase_20 AC 66 ms
49,192 KB
testcase_21 AC 51 ms
38,464 KB
testcase_22 AC 44 ms
33,792 KB
testcase_23 AC 38 ms
31,496 KB
testcase_24 AC 62 ms
46,876 KB
testcase_25 AC 31 ms
24,628 KB
testcase_26 AC 51 ms
38,464 KB
testcase_27 AC 37 ms
33,420 KB
testcase_28 AC 47 ms
38,976 KB
testcase_29 AC 45 ms
38,204 KB
testcase_30 AC 48 ms
40,132 KB
testcase_31 AC 26 ms
25,864 KB
testcase_32 AC 65 ms
49,564 KB
testcase_33 AC 36 ms
31,488 KB
testcase_34 AC 62 ms
47,920 KB
testcase_35 AC 68 ms
49,972 KB
testcase_36 AC 66 ms
44,708 KB
testcase_37 AC 63 ms
48,800 KB
testcase_38 AC 45 ms
36,684 KB
testcase_39 AC 24 ms
25,720 KB
testcase_40 AC 25 ms
25,592 KB
testcase_41 AC 26 ms
27,716 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.Diagnostics;
using System.Globalization;
using System.IO;
using System.Text;
using System.Linq;

using E = System.Linq.Enumerable;
using System.Threading;
using System.Numerics;

internal partial class Solver {
    public void Run() {
        var n = ni();
        // 2-dight   -> all 3の倍数
        // 3..-dight -> 3690 only
        long ans = 0;
        for (int i = 12; i <= 100 && i <= n; i += 3) {
            ans++;
        }
        var queue = new Queue<long>();
        var visited = new HashSet<long>();
        foreach (var d3 in new[] { 300, 600, 900 }) {
            foreach (var d2 in new[] { 0, 30, 60, 90 }) {
                foreach (var d1 in new[] { 0, 3, 6, 9 }) {
                    queue.Enqueue(d1 + d2 + d3);
                }
            }
        }

        while (queue.Count > 0) {
            var now = queue.Dequeue();
            if (now > n) continue;
            if (!visited.Add(now)) continue;
            ans++;
            queue.Enqueue(now * 10 + 0);
            queue.Enqueue(now * 10 + 3);
            queue.Enqueue(now * 10 + 6);
            queue.Enqueue(now * 10 + 9);
        }

        cout.WriteLine(ans);
    }
}


// PREWRITEN CODE BEGINS FROM HERE

static public class StringExtensions {
    static public string JoinToString<T>(this IEnumerable<T> source, string separator = " ") {
        return string.Join(separator, source);
    }
}

internal partial class Solver : Scanner {
    static readonly int? StackSizeInMebiByte = null; //50;
    public static void StartAndJoin(Action action, int maxStackSize) {
        var thread = new Thread(new ThreadStart(action), maxStackSize);
        thread.Start();
        thread.Join();
    }

    public static void Main() {
#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 });
        if (StackSizeInMebiByte.HasValue) {
            StartAndJoin(() => new Solver(Console.In, Console.Out).Run(), StackSizeInMebiByte.Value * 1024 * 1024);
        } else {
            new Solver(Console.In, Console.Out).Run();
        }
        Console.Out.Flush();
#endif
    }

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

    public Solver(TextReader reader, TextWriter writer)
        : base(reader) {
        cin = reader;
        cout = writer;
        cerr = Console.Error;
    }

    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
}

#if DEBUG
internal static class LinqPadExtension {
    public static string TextDump<T>(this T obj) {
        if (obj is IEnumerable) return (obj as IEnumerable).Cast<object>().JoinToString().Dump();
        else return obj.ToString().Dump();
    }
    public static T Dump<T>(this T obj) {
        return LINQPad.Extensions.Dump(obj);
    }
}
#endif

public class Scanner {
    private readonly TextReader Reader;
    private readonly CultureInfo ci = CultureInfo.InvariantCulture;

    private readonly char[] buffer = new char[2 * 1024];
    private int cursor = 0, length = 0;
    private string Token;
    private readonly StringBuilder sb = new StringBuilder(1024);

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

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

    public int NextInt() { return checked((int)NextLong()); }
    public long NextLong() {
        var s = Next();
        long r = 0;
        int i = 0;
        bool negative = false;
        if (s[i] == '-') {
            negative = true;
            i++;
        }
        for (; i < s.Length; i++) {
            r = r * 10 + (s[i] - '0');
#if DEBUG
            if (!char.IsDigit(s[i])) throw new FormatException();
#endif
        }
        return negative ? -r : r;
    }
    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 (Token == null) {
            if (!StockToken()) {
                throw new Exception();
            }
        }
        var token = Token;
        Token = null;
        return token;
    }

    public bool HasNext() {
        if (Token != null) {
            return true;
        }

        return StockToken();
    }

    private bool StockToken() {
        while (true) {
            sb.Clear();
            while (true) {
                if (cursor >= length) {
                    cursor = 0;
                    if ((length = Reader.Read(buffer, 0, buffer.Length)) <= 0) {
                        break;
                    }
                }
                var c = buffer[cursor++];
                if (33 <= c && c <= 126) {
                    sb.Append(c);
                } else {
                    if (sb.Length > 0) break;
                }
            }

            if (sb.Length > 0) {
                Token = sb.ToString();
                return true;
            }

            return false;
        }
    }
}
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