結果
問題 | No.241 出席番号(1) |
ユーザー | eitaho |
提出日時 | 2015-07-10 22:39:05 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 32 ms / 2,000 ms |
コード長 | 3,617 bytes |
コンパイル時間 | 1,087 ms |
コンパイル使用メモリ | 109,952 KB |
実行使用メモリ | 19,328 KB |
最終ジャッジ日時 | 2024-11-30 21:20:22 |
合計ジャッジ時間 | 3,491 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 29 |
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
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{public void Solve(){int N = Reader.Int();var Bad = Reader.IntArray(N);var matching = new BipartiteMatching(N * 2);for (int i = 0; i < N; i++)for (int d = 0; d < N; d++)if (d != Bad[i])matching.AddEdge(i, N + d);int x = matching.Run();if (x < N)Console.WriteLine(-1);elsefor (int i = 0; i < N; i++)Console.WriteLine(matching.match[i] - N);}class BipartiteMatching{int V;List<int>[] G;public int[] match;bool[] seen;public BipartiteMatching(int V){this.V = V;G = Enumerable.Range(0, V).Select(i => new List<int>()).ToArray();match = Enumerable.Repeat(-1, V).ToArray();}public void AddEdge(int a, int b){G[a].Add(b);G[b].Add(a);}public int Run(){int res = 0;for (int i = 0; i < V; i++){if (match[i] < 0){seen = new bool[V];if (DFS(i)) res++;}}return res;}bool DFS(int v){seen[v] = true;foreach (int next in G[v]){int m = match[next];if (m < 0 || !seen[m] && DFS(m)){match[v] = next;match[next] = v;return true;}}return false;}}}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;}}