結果
問題 | No.2354 Poor Sight in Winter |
ユーザー | kakel-san |
提出日時 | 2023-08-09 08:27:25 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 157 ms / 2,000 ms |
コード長 | 4,105 bytes |
コンパイル時間 | 4,749 ms |
コンパイル使用メモリ | 118,148 KB |
実行使用メモリ | 29,800 KB |
最終ジャッジ日時 | 2024-11-14 14:59:11 |
合計ジャッジ時間 | 4,269 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 33 ms
25,356 KB |
testcase_01 | AC | 32 ms
25,100 KB |
testcase_02 | AC | 34 ms
27,136 KB |
testcase_03 | AC | 33 ms
25,332 KB |
testcase_04 | AC | 33 ms
25,264 KB |
testcase_05 | AC | 33 ms
22,964 KB |
testcase_06 | AC | 33 ms
25,388 KB |
testcase_07 | AC | 32 ms
23,216 KB |
testcase_08 | AC | 33 ms
25,352 KB |
testcase_09 | AC | 33 ms
27,372 KB |
testcase_10 | AC | 33 ms
23,476 KB |
testcase_11 | AC | 98 ms
27,548 KB |
testcase_12 | AC | 97 ms
25,480 KB |
testcase_13 | AC | 157 ms
28,520 KB |
testcase_14 | AC | 143 ms
27,848 KB |
testcase_15 | AC | 127 ms
27,604 KB |
testcase_16 | AC | 133 ms
27,736 KB |
testcase_17 | AC | 136 ms
29,800 KB |
testcase_18 | AC | 71 ms
25,432 KB |
testcase_19 | AC | 112 ms
27,852 KB |
testcase_20 | AC | 77 ms
27,356 KB |
testcase_21 | AC | 36 ms
25,268 KB |
testcase_22 | AC | 56 ms
27,524 KB |
testcase_23 | AC | 55 ms
25,352 KB |
testcase_24 | AC | 92 ms
25,428 KB |
testcase_25 | AC | 48 ms
25,392 KB |
testcase_26 | AC | 45 ms
27,372 KB |
testcase_27 | AC | 34 ms
25,352 KB |
testcase_28 | AC | 36 ms
25,204 KB |
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[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray(); public static void Main() { Solve(); } static void Solve() { var c = NList; var (n, k) = (c[0], c[1]); c = NList; var (sx, sy, gx, gy) = (c[0], c[1], c[2], c[3]); var map = NArr(n).ToList(); map.Add(new int[] { sx, sy }); map.Add(new int[] { gx, gy }); var len = new int[map.Count][]; for (var i = 0; i < len.Length; ++i) { len[i] = new int[map.Count]; for (var j = 0; j < len[i].Length; ++j) len[i][j] = Math.Abs(map[i][0] - map[j][0]) + Math.Abs(map[i][1] - map[j][1]); } var ok = 1_000_000; var ng = 0; while (ok - ng > 1) { var mid = (ok + ng) / 2; var lights = Enumerable.Repeat(int.MaxValue / 2, map.Count).ToArray(); lights[n] = 0; var q = new PriorityQueue<Pair>(n, false); q.Enqueue(new Pair(n, 0)); while (q.Count > 0) { var cur = q.Dequeue(); if (lights[cur.Pos] != cur.Val) continue; for (var next = 0; next < map.Count; ++next) { var add = len[cur.Pos][next] / mid; if (len[cur.Pos][next] > 0 && len[cur.Pos][next] % mid == 0) --add; if (lights[next] <= cur.Val + add) continue; lights[next] = cur.Val + add; q.Enqueue(new Pair(next, lights[next])); } } if (lights[n + 1] <= k) ok = mid; else ng = mid; } WriteLine(ok); } 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; } } }