結果
問題 | No.424 立体迷路 |
ユーザー | AreTrash |
提出日時 | 2016-09-22 23:39:54 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 32 ms / 2,000 ms |
コード長 | 3,912 bytes |
コンパイル時間 | 887 ms |
コンパイル使用メモリ | 118,764 KB |
実行使用メモリ | 19,712 KB |
最終ジャッジ日時 | 2024-07-05 07:06:30 |
合計ジャッジ時間 | 2,483 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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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 | 31 ms
19,456 KB |
testcase_01 | AC | 30 ms
19,200 KB |
testcase_02 | AC | 30 ms
19,456 KB |
testcase_03 | AC | 31 ms
19,456 KB |
testcase_04 | AC | 30 ms
19,456 KB |
testcase_05 | AC | 30 ms
19,328 KB |
testcase_06 | AC | 30 ms
19,328 KB |
testcase_07 | AC | 30 ms
19,584 KB |
testcase_08 | AC | 30 ms
19,328 KB |
testcase_09 | AC | 31 ms
19,456 KB |
testcase_10 | AC | 31 ms
19,328 KB |
testcase_11 | AC | 31 ms
19,200 KB |
testcase_12 | AC | 31 ms
19,456 KB |
testcase_13 | AC | 30 ms
19,328 KB |
testcase_14 | AC | 30 ms
19,456 KB |
testcase_15 | AC | 30 ms
19,456 KB |
testcase_16 | AC | 31 ms
19,328 KB |
testcase_17 | AC | 31 ms
19,328 KB |
testcase_18 | AC | 32 ms
19,584 KB |
testcase_19 | AC | 31 ms
19,584 KB |
testcase_20 | AC | 32 ms
19,456 KB |
testcase_21 | AC | 30 ms
19,328 KB |
testcase_22 | AC | 30 ms
19,328 KB |
testcase_23 | AC | 30 ms
19,456 KB |
testcase_24 | AC | 32 ms
19,328 KB |
testcase_25 | AC | 32 ms
19,712 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 System.Linq; namespace No424_2{ public class Program{ public static void Main(string[] args){ var sr = new StreamReader(); //--------------------------------- var H = sr.Next<int>(); var W = sr.Next<int>(); var Sy = sr.Next<int>() - 1; var Sx = sr.Next<int>() - 1; var Gy = sr.Next<int>() - 1; var Gx = sr.Next<int>() - 1; var B = sr.Next<string>(H).Select(s => s.Select(c => c - '0').ToArray()).ToArray(); var dx = new[]{0, 1, 0, -1}; var dy = new[]{1, 0, -1, 0}; Func<int, int, bool> isInside = (x, y) => 0 <= x && x < W && 0 <= y && y < H; Func<int, int, int> hash = (x, y) => x + y * W; var uf = new UnionFind(H * W); for(var y = 0; y < H; y++){ for(var x = 0; x < W; x++){ for(var i = 0; i < 4; i++){ var nx = x + dx[i]; var ny = y + dy[i]; var nnx = nx + dx[i]; var nny = ny + dy[i]; if(isInside(nx, ny) && Math.Abs(B[y][x] - B[ny][nx]) <= 1){ uf.Unite(hash(x, y), hash(nx, ny)); } if(isInside(nnx, nny) && B[y][x] == B[nny][nnx] && B[ny][nx] < B[y][x]){ uf.Unite(hash(x, y), hash(nnx, nny)); } } } } Console.WriteLine(uf.IsSameSet(hash(Sx, Sy), hash(Gx, Gy)) ? "YES" : "NO"); //--------------------------------- } } public class UnionFind{ private readonly int[] _rank; private readonly int[] _p; public UnionFind(int size){ _rank = new int[size]; _p = new int[size]; for(var i = 0; i < size; i++){ _rank[i] = 0; _p[i] = i; } } public void Unite(int x, int y){ x = FindSet(x); y = FindSet(y); if(_rank[x] > _rank[y]) _p[y] = x; if(_rank[x] < _rank[y]) _p[x] = y; if(_rank[x] == _rank[y]){ _p[x] = y; _rank[y]++; } } public bool IsSameSet(int x, int y){ return FindSet(x) == FindSet(y); } public int FindSet(int x){ if(_p[x] == x) return x; return _p[x] = FindSet(_p[x]); } } public class StreamReader{ private readonly char[] _c = {' '}; private int _index = -1; private string[] _input = new string[0]; private readonly System.IO.StreamReader _sr = new System.IO.StreamReader(Console.OpenStandardInput()); public T Next<T>(){ if(_index == _input.Length - 1){ _index = -1; while(true){ string rl = _sr.ReadLine(); if(rl == null){ if(typeof(T).IsClass) return default(T); return (T)typeof(T).GetField("MinValue").GetValue(null); } if(rl != ""){ _input = rl.Split(_c, StringSplitOptions.RemoveEmptyEntries); break; } } } return (T)Convert.ChangeType(_input[++_index], typeof(T), System.Globalization.CultureInfo.InvariantCulture); } public T[] Next<T>(int x){ var ret = new T[x]; for(var i = 0; i < x; ++i) ret[i] = Next<T>(); return ret; } public T[][] Next<T>(int y, int x){ var ret = new T[y][]; for(var i = 0; i < y; ++i) ret[i] = Next<T>(x); return ret; } } }