結果

問題 No.2664 Prime Sum
ユーザー tobisatistobisatis
提出日時 2024-03-08 21:33:16
言語 C#
(.NET 8.0.203)
結果
AC  
実行時間 86 ms / 2,000 ms
コード長 3,822 bytes
コンパイル時間 9,095 ms
コンパイル使用メモリ 159,068 KB
実行使用メモリ 179,884 KB
最終ジャッジ日時 2024-03-08 21:33:30
合計ジャッジ時間 13,289 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
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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 83 ms
33,060 KB
testcase_01 AC 83 ms
33,060 KB
testcase_02 AC 82 ms
33,060 KB
testcase_03 AC 82 ms
33,060 KB
testcase_04 AC 83 ms
33,060 KB
testcase_05 AC 84 ms
33,316 KB
testcase_06 AC 84 ms
33,316 KB
testcase_07 AC 84 ms
33,188 KB
testcase_08 AC 84 ms
33,188 KB
testcase_09 AC 85 ms
33,316 KB
testcase_10 AC 84 ms
33,188 KB
testcase_11 AC 83 ms
33,060 KB
testcase_12 AC 83 ms
33,188 KB
testcase_13 AC 84 ms
33,316 KB
testcase_14 AC 85 ms
33,316 KB
testcase_15 AC 85 ms
33,444 KB
testcase_16 AC 85 ms
33,316 KB
testcase_17 AC 84 ms
33,188 KB
testcase_18 AC 86 ms
33,316 KB
testcase_19 AC 84 ms
33,316 KB
testcase_20 AC 83 ms
33,316 KB
testcase_21 AC 84 ms
33,444 KB
testcase_22 AC 85 ms
33,316 KB
testcase_23 AC 86 ms
33,572 KB
testcase_24 AC 84 ms
33,700 KB
testcase_25 AC 84 ms
33,444 KB
testcase_26 AC 82 ms
33,060 KB
testcase_27 AC 83 ms
33,188 KB
testcase_28 AC 83 ms
33,060 KB
testcase_29 AC 84 ms
33,188 KB
testcase_30 AC 84 ms
33,060 KB
testcase_31 AC 82 ms
33,060 KB
testcase_32 AC 82 ms
33,188 KB
testcase_33 AC 83 ms
33,188 KB
testcase_34 AC 83 ms
33,188 KB
testcase_35 AC 84 ms
33,188 KB
testcase_36 AC 83 ms
179,884 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
  復元対象のプロジェクトを決定しています...
  /home/judge/data/code/main.csproj を復元しました (99 ms)。
MSBuild のバージョン 17.7.3+8ec440e68 (.NET)
  main -> /home/judge/data/code/bin/Release/net7.0/main.dll
  main -> /home/judge/data/code/bin/Release/net7.0/publish/

ソースコード

diff #

namespace AtCoder;

#nullable enable

using System.Numerics;

static class Extensions
{
    public static T[] Repeat<T>(this int time, Func<T> F) => Enumerable.Range(0, time).Select(_ => F()).ToArray();
}

class Graph<T>
{
    public struct Edge
    {
        public int Ab { get; set; }
        public int Ad { get; set; }
        public T Distance { get; set; }
    }

    public int N { get; private init; }
    public bool Directed { get; private init; }
    public List<List<(int next, int edgeIndex)>> AdjacencyList { get; private init; }
    public List<Edge> Edges { get; private init; }

    public Graph(int verticals, IReadOnlyList<Edge> edges, bool directed)
    {
        N = verticals;
        Directed = directed;
        AdjacencyList = new List<List<(int, int)>>();
        for (var i = 0; i < N; i++) AdjacencyList.Add(new List<(int, int)>());
        Edges = new List<Edge>();
        for (var i = 0; i < edges.Count; i++)
        {
            var edge = edges[i];
            Edges.Add(edge);
            AdjacencyList[edge.Ab].Add((edge.Ad, i));
            if (!Directed) AdjacencyList[edge.Ad].Add((edge.Ab, i));
        }
    }
}

class GraphBuilder
{
    public static Graph<int> SimpleGraph(int verticals, (int ab, int ad)[] edges, bool directed)
    {
        var e = edges.Select(e => new Graph<int>.Edge { Ab = e.ab, Ad = e.ad, Distance = 1 }).ToList();
        return new(verticals, e, directed);
    }

    public static Graph<T> Graph<T>(int verticals, (int ab, int ad, T edge)[] edges, bool directed)
    {
        var e = edges.Select(e => new Graph<T>.Edge { Ab = e.ab, Ad = e.ad, Distance = e.edge }).ToList();
        return new(verticals, e, directed);
    }
}

class AtCoder
{
    object? Solve()
    {
        var n = Int();
        var m = Int();
        var edges = m.Repeat(() => (Int() - 1, Int() - 1));
        var g = GraphBuilder.SimpleGraph(n, edges, false).AdjacencyList;
        var vz = new int[n];
        for (var i = 0; i < n; i++)
        {
            if (vz[i] != 0) continue;
            vz[i] = 1;
            var q = new Queue<int>();
            q.Enqueue(i);
            while (q.Count > 0)
            {
                var v = q.Dequeue();
                var f = vz[v];
                foreach (var (next, _) in g[v])
                {
                    var t = vz[next];
                    if (t == f) return false;
                    if (t == 0)
                    {
                        vz[next] = -f;
                        q.Enqueue(next);
                    }
                }
            }
        }
        return true;
    }

    public static void Main() => new AtCoder().Run();
    public void Run()
    {
        var res = Solve();
        if (res != null)
        {
            if (res is bool yes) res = yes ? "Yes" : "No";
            sw.WriteLine(res);
        }
        sw.Flush();
    }

    string[] input = Array.Empty<string>();
    int iter = 0;
    readonly StreamWriter sw = new(Console.OpenStandardOutput()) { AutoFlush = false };

    #pragma warning disable IDE0051
    string String()
    {
        while (iter >= input.Length) (input, iter) = (Console.ReadLine()!.Split(' '), 0);
        return input[iter++];
    }
    T Input<T>() where T : IParsable<T> => T.Parse(String(), null);
    int Int() => Input<int>();
    void Out(object? x, string? separator = null)
    {
        separator ??= Environment.NewLine;
        if (x is System.Collections.IEnumerable obj and not string)
        {
            var firstLine = true;
            foreach (var item in obj)
            {
                if (!firstLine) sw.Write(separator);
                firstLine = false;
                sw.Write(item);
            }
        }
        else sw.Write(x);
        sw.WriteLine();
    }
    #pragma warning restore IDE0051
}
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