結果
問題 | No.1382 Travel in Mitaru city |
ユーザー |
|
提出日時 | 2024-07-24 23:10:09 |
言語 | C# (.NET 8.0.404) |
結果 |
AC
|
実行時間 | 367 ms / 2,000 ms |
コード長 | 3,662 bytes |
コンパイル時間 | 10,349 ms |
コンパイル使用メモリ | 169,436 KB |
実行使用メモリ | 190,828 KB |
最終ジャッジ日時 | 2024-07-24 23:10:38 |
合計ジャッジ時間 | 27,767 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 68 |
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 (95 ms)。 MSBuild のバージョン 17.9.6+a4ecab324 (.NET) main -> /home/judge/data/code/bin/Release/net8.0/main.dll main -> /home/judge/data/code/bin/Release/net8.0/publish/
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();public static void Main(){Solve();}static void Solve(){var c = NList;var (n, m, s, t) = (c[0], c[1], c[2], c[3]);--s;--t;var p = NList;var map = NMap(m);var tree = new List<int>[n];for (var i = 0; i < n; ++i) tree[i] = new List<int>();foreach (var edge in map){tree[edge[0]].Add(edge[1]);tree[edge[1]].Add(edge[0]);}var x = p[s];var y = 0;var q = new PriorityQueue<Pair>(n, true);q.Enqueue(new Pair(s, p[s]));var visited = new bool[n];while (q.Count > 0){var cur = q.Dequeue();if (visited[cur.Pos]) continue;visited[cur.Pos] = true;if (x > cur.Val){x = cur.Val;++y;}foreach (var next in tree[cur.Pos]){if (visited[next]) continue;q.Enqueue(new Pair(next, p[next]));}}WriteLine(y);}class Pair : IComparable<Pair>{public int Pos;public int Val;public Pair(int pos, int val){Pos = pos; Val = val;}public int CompareTo(Pair b){return Val.CompareTo(b.Val);}}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;}}}