結果
問題 | No.416 旅行会社 |
ユーザー |
![]() |
提出日時 | 2016-08-26 22:42:23 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 378 ms / 4,000 ms |
コード長 | 6,897 bytes |
コンパイル時間 | 1,317 ms |
コンパイル使用メモリ | 116,544 KB |
実行使用メモリ | 56,192 KB |
最終ジャッジ日時 | 2024-12-14 19:44:23 |
合計ジャッジ時間 | 6,589 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 |
---|---|
other | AC * 21 |
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.Linq;using System.Linq.Expressions;using System.Collections.Generic;using Debug = System.Diagnostics.Debug;using StringBuilder = System.Text.StringBuilder;using System.Numerics;using Number = System.Int64;namespace Program{public class Solver{public void Solve(){var n = sc.Integer();var m = sc.Integer();var q = sc.Integer();var a = new int[m];var b = new int[m];var c = new int[q];var d = new int[q];var use = new SortedSet<long>();var s = new WeighedQuickUnion(n);for (int i = 0; i < m; i++){a[i] = sc.Integer() - 1;b[i] = sc.Integer() - 1;if (a[i] > b[i]) Swap(ref a[i], ref b[i]);}for (int i = 0; i < q; i++){c[i] = sc.Integer() - 1;d[i] = sc.Integer() - 1;if (c[i] > d[i]) Swap(ref c[i], ref d[i]);}for (int i = 0; i < q; i++)use.Add(c[i] * 1000000L + d[i]);for (int i = 0; i < m; i++){if (use.Contains(a[i] * 1000000L + b[i])) continue;s.Unite(a[i], b[i]);}var ans = new int[n];for (int i = 0; i < n; i++)if (s.Same(i, 0)) ans[i] = -1;for (int i = q - 1; i >= 0; i--){if (!s.Same(c[i], d[i])){if (s.Same(d[i], 0))foreach (var x in s.group[c[i]]){Debug.Assert(ans[x] == 0);ans[x] = i + 1;}if (s.Same(c[i], 0))foreach (var x in s.group[d[i]]){Debug.Assert(ans[x] == 0);ans[x] = i + 1;}s.Unite(c[i], d[i]);}}for (int i = 1; i < n; i++)IO.Printer.Out.WriteLine(ans[i]);}public IO.StreamScanner sc = new IO.StreamScanner(Console.OpenStandardInput());static T[] Enumerate<T>(int n, Func<int, T> f) { var a = new T[n]; for (int i = 0; i < n; ++i) a[i] = f(i); return a; }static public void Swap<T>(ref T a, ref T b) { var tmp = a; a = b; b = tmp; }}}#region mainstatic class Ex{static public string AsString(this IEnumerable<char> ie) { return new string(System.Linq.Enumerable.ToArray(ie)); }static public string AsJoinedString<T>(this IEnumerable<T> ie, string st = " ") { return string.Join(st, ie); }static public void Main(){var solver = new Program.Solver();solver.Solve();Program.IO.Printer.Out.Flush();}}#endregion#region Exnamespace Program.IO{using System.IO;using System.Text;using System.Globalization;public class Printer: StreamWriter{static Printer() { Out = new Printer(Console.OpenStandardOutput()) { AutoFlush = false }; }public static Printer Out { get; set; }public override IFormatProvider FormatProvider { get { return CultureInfo.InvariantCulture; } }public Printer(System.IO.Stream stream) : base(stream, new UTF8Encoding(false, true)) { }public Printer(System.IO.Stream stream, Encoding encoding) : base(stream, encoding) { }public void Write<T>(string format, T[] source) { base.Write(format, source.OfType<object>().ToArray()); }public void WriteLine<T>(string format, T[] source) { base.WriteLine(format, source.OfType<object>().ToArray()); }}public class StreamScanner{public StreamScanner(Stream stream) { str = stream; }public readonly Stream str;private readonly byte[] buf = new byte[1024];private int len, ptr;public bool isEof = false;public bool IsEndOfStream { get { return isEof; } }private byte read(){if (isEof) return 0;if (ptr >= len) { ptr = 0; if ((len = str.Read(buf, 0, 1024)) <= 0) { isEof = true; return 0; } }return buf[ptr++];}public char Char() { byte b = 0; do b = read(); while ((b < 33 || 126 < b) && !isEof); return (char)b; }public string Scan(){var sb = new StringBuilder();for (var b = Char(); b >= 33 && b <= 126; b = (char)read())sb.Append(b);return sb.ToString();}public string ScanLine(){var sb = new StringBuilder();for (var b = Char(); b != '\n'; b = (char)read())if (b == 0) break;else if (b != '\r') sb.Append(b);return sb.ToString();}public long Long(){if (isEof) return long.MinValue;long ret = 0; byte b = 0; var ng = false;do b = read();while (b != 0 && b != '-' && (b < '0' || '9' < b));if (b == 0) return long.MinValue;if (b == '-') { ng = true; b = read(); }for (; true; b = read()){if (b < '0' || '9' < b)return ng ? -ret : ret;else ret = ret * 10 + b - '0';}}public int Integer() { return (isEof) ? int.MinValue : (int)Long(); }public double Double() { var s = Scan(); return s != "" ? double.Parse(s, CultureInfo.InvariantCulture) : double.NaN; }private T[] enumerate<T>(int n, Func<T> f){var a = new T[n];for (int i = 0; i < n; ++i) a[i] = f();return a;}public char[] Char(int n) { return enumerate(n, Char); }public string[] Scan(int n) { return enumerate(n, Scan); }public double[] Double(int n) { return enumerate(n, Double); }public int[] Integer(int n) { return enumerate(n, Integer); }public long[] Long(int n) { return enumerate(n, Long); }}}#endregion#region WeightedQuickUnionpublic class WeighedQuickUnion{public List<int>[] group;public WeighedQuickUnion(int n){group = new List<int>[n];for (int i = 0; i < n; i++)group[i] = new List<int>() { i };}public void Unite(int i, int j){if (Same(i, j)) return;var a = group[i];var b = group[j];if (a.Count < b.Count) { var tmp = a; a = b; b = tmp; }foreach (var x in b){group[x] = a;a.Add(x);}}public bool Same(int i, int j){return group[i] == group[j];}}#endregion