結果
問題 |
No.2431 Viral Hotel
|
ユーザー |
|
提出日時 | 2023-08-18 23:00:45 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 495 ms / 2,000 ms |
コード長 | 5,206 bytes |
コンパイル時間 | 4,375 ms |
コンパイル使用メモリ | 115,352 KB |
実行使用メモリ | 55,236 KB |
最終ジャッジ日時 | 2024-11-28 09:32:57 |
合計ジャッジ時間 | 17,349 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 42 |
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 static System.Console; using System.Linq; using System.Collections.Generic; class Program { static int NN => int.Parse(ReadLine()); static int[] NList => ReadLine().Split().Select(int.Parse).ToArray(); static int[] NMi => ReadLine().Split().Select(c => int.Parse(c) - 1).ToArray(); static int[][] NMap(int n) => Enumerable.Repeat(0, n).Select(_ => NMi).ToArray(); static int[] LList(long n) => Enumerable.Repeat(0, (int)n).Select(_ => int.Parse(ReadLine())).ToArray(); public static void Main() { Solve(); } static void Solve() { var c = NList; var (n, k, m, p) = (c[0], c[1], c[2], c[3]); var map = NMap(m); var s = LList(n); var x = LList(k); var tree = new List<int>[n]; for (var i = 0; i < tree.Length; ++i) tree[i] = new List<int>(); foreach (var edge in map) { tree[edge[0]].Add(edge[1]); tree[edge[1]].Add(edge[0]); } var q = new PriorityQueue<Pair>(n, false); var count = new int[n]; foreach (var xi in x) { ++count[xi - 1]; q.Enqueue(new Pair(xi - 1, 0, p)); q.Enqueue(new Pair(xi - 1, 1, s[xi - 1])); // WriteLine($"day:0, v:{xi - 1}"); } while (q.Count > 0) { var date = q.List[0].Time; var move = new HashSet<int>(); while (q.Count > 0 && q.List[0].Time == date) { var cur = q.Dequeue(); if (cur.Kind == 0 && count[cur.Pos] == 1) { // recover count[cur.Pos] = -1; // WriteLine($"day:{date}, recover:{cur.Pos}"); } else if (cur.Kind == 1) { // spread if (count[cur.Pos] == 1 || count[cur.Pos] == -1) { foreach (var next in tree[cur.Pos]) { if (count[next] == 0) { ++count[next]; q.Enqueue(new Pair(next, 0, date + p)); q.Enqueue(new Pair(next, 1, date + s[next])); // WriteLine($"day:{date}, v:{next} from {cur.Pos}"); } else if (count[next] == 1) { move.Add(next); // WriteLine($"day:{date}, v:{next} from {cur.Pos}, moved"); } } } } } foreach (var mi in move) count[mi] = 2; } WriteLine(count.Count(ci => ci > 1)); } class Pair : IComparable<Pair> { public int Pos; public int Kind; public int Time; public Pair(int pos, int kind, int time) { Pos = pos; Kind = kind; Time = time; } public int CompareTo(Pair b) { var d = Time.CompareTo(b.Time); if (d != 0) return d; return Kind.CompareTo(b.Kind); } } class PriorityQueue<T> where T : IComparable<T> { public T[] List; public int Count; bool IsTopMax; public PriorityQueue(int count, bool isTopMax) { IsTopMax = isTopMax; List = new T[Math.Max(128, count)]; } public void Enqueue(T value) { if (Count == List.Length) { var newlist = new T[List.Length * 2]; for (var i = 0; i < List.Length; ++i) newlist[i] = List[i]; List = newlist; } var pos = Count; List[pos] = value; ++Count; while (pos > 0) { var parent = (pos - 1) / 2; if (Calc(List[parent], List[pos], true)) break; Swap(parent, pos); pos = parent; } } public T Dequeue() { --Count; Swap(0, Count); var pos = 0; while (true) { var child = pos * 2 + 1; if (child >= Count) break; if (child + 1 < Count && Calc(List[child + 1], List[child], false)) ++child; if (Calc(List[pos], List[child], true)) break; Swap(pos, child); pos = child; } return List[Count]; } bool Calc(T a, T b, bool equalVal) { var ret = a.CompareTo(b); if (ret == 0 && equalVal) return true; return IsTopMax ? ret > 0 : ret < 0; } void Swap(int a, int b) { var tmp = List[a]; List[a] = List[b]; List[b] = tmp; } } }