結果

問題 No.177 制作進行の宮森あおいです!
ユーザー eitahoeitaho
提出日時 2015-04-02 23:46:32
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 72 ms / 2,000 ms
コード長 5,123 bytes
コンパイル時間 2,426 ms
コンパイル使用メモリ 111,728 KB
実行使用メモリ 23,784 KB
最終ジャッジ日時 2023-09-17 03:46:33
合計ジャッジ時間 4,381 ms
ジャッジサーバーID
(参考情報)
judge14 / judge11
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 67 ms
19,732 KB
testcase_01 AC 67 ms
21,784 KB
testcase_02 AC 68 ms
21,796 KB
testcase_03 AC 68 ms
21,712 KB
testcase_04 AC 67 ms
23,780 KB
testcase_05 AC 69 ms
21,760 KB
testcase_06 AC 71 ms
23,784 KB
testcase_07 AC 69 ms
21,780 KB
testcase_08 AC 69 ms
21,804 KB
testcase_09 AC 71 ms
23,756 KB
testcase_10 AC 70 ms
19,752 KB
testcase_11 AC 72 ms
21,840 KB
testcase_12 AC 71 ms
21,864 KB
testcase_13 AC 67 ms
21,780 KB
testcase_14 AC 68 ms
21,752 KB
testcase_15 AC 67 ms
21,640 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.IO;
using System.Linq;
using System.Text;
using System.Collections.Generic;
using System.Diagnostics;
using System.Numerics;
using Enu = System.Linq.Enumerable;

class Program
{
    static readonly string OK = "SHIROBAKO", NG = "BANSAKUTSUKITA";

    public void Solve()
    {
        int W = Reader.Int();
        int NA = Reader.Int();
        var A = Reader.IntArray(NA);
        int NB = Reader.Int();
        var B = Reader.IntArray(NB);
        var table = Reader.IntTable(NB);
        int S = NA + NB, T = S + 1;
        var dinic = new Dinic(T + 1);

        for (int ai = 0; ai < NA; ai++)
        {
            dinic.AddEdge(S, ai, A[ai]);
            for (int bi = 0; bi < NB; bi++)
                if (!table[bi].Skip(1).Contains(ai + 1))
                    dinic.AddEdge(ai, NA + bi, Dinic.INF);
        }
        for (int bi = 0; bi < NB; bi++)
            dinic.AddEdge(NA + bi, T, B[bi]);
        bool ok = dinic.MaxFlow(S, T) >= W;

        Console.WriteLine(ok ? OK : NG);
    }

    class Dinic
    {
        public static readonly int INF = (int)1e9;
        List<Edge>[] G;
        int S, T;
        int[] level;
        int[] iter;

        public Dinic(int V)
        {
            G = new List<Edge>[V];
            for (int i = 0; i < V; i++) G[i] = new List<Edge>();
        }
        public void AddEdge(int from, int to, int capacity)
        {
            G[from].Add(new Edge(to, capacity, G[to].Count));
            G[to].Add(new Edge(from, 0, G[from].Count - 1));
        }
        public int MaxFlow(int s, int t)
        {
            S = s; T = t;
            int flow = 0;
            while (true)
            {
                BFS();
                if (level[T] < 0) return flow;
                iter = new int[G.Length];
                int f;
                while ((f = DFS(S, INF)) > 0) { flow += f; }
            }
        }
        private void BFS()
        {
            level = Enumerable.Repeat(-1, G.Length).ToArray();
            Queue<int> que = new Queue<int>();
            que.Enqueue(S);
            level[S] = 0;
            while (que.Count > 0)
            {
                int v = que.Dequeue();
                foreach (Edge e in G[v])
                    if (e.capacity > 0 && level[e.to] < 0)
                    {
                        level[e.to] = level[v] + 1;
                        que.Enqueue(e.to);
                    }
            }
        }
        private int DFS(int v, int flow)
        {
            if (v == T) return flow;
            while (iter[v] < G[v].Count)
            {
                Edge e = G[v][iter[v]];
                if (e.capacity > 0 && level[v] < level[e.to])
                {
                    int d = DFS(e.to, Math.Min(flow, e.capacity));
                    if (d > 0)
                    {
                        e.capacity -= d;
                        G[e.to][e.reverse].capacity += d;
                        return d;
                    }
                }
                iter[v]++;
            }
            return 0;
        }

        class Edge
        {
            public int to, reverse;
            public int capacity;
            public Edge(int to, int capacity, int reverse)
            {
                this.to = to;
                this.capacity = capacity;
                this.reverse = reverse;
            }
        }
    }

}


class Entry { static void Main() { new Program().Solve(); } }
class Reader
{
    private static TextReader reader = Console.In;
    private static readonly char[] separator = { ' ' };
    private static readonly StringSplitOptions op = StringSplitOptions.RemoveEmptyEntries;
    private static string[] A = new string[0];
    private static int i;
    private static void Init() { A = new string[0]; }
    public static void Set(TextReader r) { reader = r; Init(); }
    public static void Set(string file) { reader = new StreamReader(file); Init(); }
    public static bool HasNext() { return CheckNext(); }
    public static string String() { return Next(); }
    public static int Int() { return int.Parse(Next()); }
    public static long Long() { return long.Parse(Next()); }
    public static double Double() { return double.Parse(Next()); }
    public static int[] IntLine() { return Array.ConvertAll(Split(Line()), int.Parse); }
    public static int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); }
    public static int[][] IntTable(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); }
    public static string[] StringArray(int N) { return Enu.Range(0, N).Select(i => Line()).ToArray(); }
    public static string Line() { return reader.ReadLine().Trim(); }
    private static string[] Split(string s) { return s.Split(separator, op); }
    private static string Next() { CheckNext(); return A[i++]; }
    private static bool CheckNext()
    {
        if (i < A.Length) return true;
        string line = reader.ReadLine();
        if (line == null) return false;
        if (line == "") return CheckNext();
        A = Split(line);
        i = 0;
        return true;
    }
}
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