結果
問題 | No.2805 Go to School |
ユーザー |
|
提出日時 | 2024-07-13 20:00:01 |
言語 | C# (.NET 8.0.404) |
結果 |
AC
|
実行時間 | 778 ms / 2,000 ms |
コード長 | 4,158 bytes |
コンパイル時間 | 9,504 ms |
コンパイル使用メモリ | 167,456 KB |
実行使用メモリ | 231,596 KB |
最終ジャッジ日時 | 2024-07-16 01:42:54 |
合計ジャッジ時間 | 21,321 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 35 |
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 (100 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[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).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, m, l, s, e) = (c[0], c[1], c[2], c[3], c[4]);var map = NArr(m);var t = NList;var tree = new List<(int to, long len)>[n];for (var i = 0; i < n; ++i) tree[i] = new List<(int to, long len)>();foreach (var road in map){tree[road[0] - 1].Add((road[1] - 1, road[2]));tree[road[1] - 1].Add((road[0] - 1, road[2]));}var slen = Search(0, tree);var tlen = Search(n - 1, tree);var ans = INF;foreach (var ti in t){if (slen[ti - 1] < s + e && tlen[ti - 1] < INF) ans = Math.Min(ans, Math.Max(s, slen[ti - 1]) + tlen[ti - 1] + 1);}WriteLine(ans == INF ? -1 : ans);}static long INF = long.MaxValue / 2;static long[] Search(int start, List<(int to, long len)>[] tree){var ans = Enumerable.Repeat(INF, tree.Length).ToArray();ans[start] = 0;var q = new PriorityQueue<Pair>(tree.Length, false);q.Enqueue(new Pair(start, 0));while (q.Count > 0){var cur = q.Dequeue();if (ans[cur.Pos] != cur.Val) continue;foreach (var next in tree[cur.Pos]){if (ans[next.to] <= cur.Val + next.len) continue;ans[next.to] = cur.Val + next.len;q.Enqueue(new Pair(next.to, ans[next.to]));}}return ans;}class Pair : IComparable<Pair>{public int Pos;public long Val;public Pair(int pos, long 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;}}}