結果
| 問題 |
No.697 池の数はいくつか
|
| ユーザー |
 sekiya9311
|
| 提出日時 | 2018-06-16 16:39:44 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
AC
|
| 実行時間 | 3,807 ms / 6,000 ms |
| コード長 | 9,996 bytes |
| コンパイル時間 | 2,566 ms |
| コンパイル使用メモリ | 112,128 KB |
| 実行使用メモリ | 74,972 KB |
| 最終ジャッジ日時 | 2024-11-08 07:52:44 |
| 合計ジャッジ時間 | 27,634 ms |
|
ジャッジサーバーID （参考情報） |
judge5 / judge2 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 32 |
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.Collections.Generic;
using System.Linq;
using System.Text;
namespace ProgrammingContest
{
class Writer : IDisposable
{
private readonly System.IO.TextWriter writer;
private StringBuilder sb;
private readonly bool isReactive;
public Writer(string path)
: this(new System.IO.StreamWriter(path))
{
}
public Writer(bool isReactive)
: this(null, isReactive)
{
}
public Writer(System.IO.TextWriter writer = null,
bool isReactive = false)
{
this.writer = (writer ?? Console.Out);
this.isReactive = isReactive;
if (!this.isReactive)
{
this.sb = new StringBuilder();
}
}
public void Dispose()
{
if (!this.isReactive)
{
this.writer.Write(sb.ToString());
}
if (!this.writer.Equals(Console.Out))
{
this.writer.Dispose();
}
}
public void Write(object val)
{
if (this.isReactive)
{
this.writer.Write(val.ToString());
this.writer.Flush();
}
else
{
this.sb.Append(val.ToString());
}
}
public void Write(string format, params object[] vals)
{
if (this.isReactive)
{
this.writer.Write(format, vals);
this.writer.Flush();
}
else
{
this.sb.AppendFormat(format, vals);
}
}
public void WriteLine(object val = null)
{
this.Write((val ?? string.Empty).ToString() + System.Environment.NewLine);
}
public void WriteLine(int val)
{
this.WriteLine(val.ToString());
}
public void WriteLine(long val)
{
this.WriteLine(val.ToString());
}
public void WriteLine(string val)
{
this.WriteLine((object)val);
}
public void WriteLine(string format, params object[] vals)
{
this.Write(format + System.Environment.NewLine, vals);
}
}
class Scanner : IDisposable
{
private readonly Queue<string> buffer;
private readonly char[] sep;
private readonly System.IO.TextReader reader;
public Scanner(string path, char[] sep = null)
: this(new System.IO.StreamReader(path), sep)
{
}
public Scanner(System.IO.TextReader reader = null,
char[] sep = null)
{
this.buffer = new Queue<string>();
this.sep = (sep ?? new char[] { ' ' });
this.reader = (reader ?? Console.In);
}
private void CheckBuffer()
{
if (this.buffer.Count == 0 && this.reader.Peek() != -1)
{
string str = string.Empty;
for (; string.IsNullOrEmpty(str);
str = this.reader.ReadLine()) ;
str.Split(this.sep).ToList()
.ForEach(el => this.buffer.Enqueue(el));
}
}
public void Dispose()
{
if (!this.reader.Equals(Console.In))
{
this.reader.Dispose();
}
}
public string Next
{
get
{
this.CheckBuffer();
return this.buffer.Dequeue();
}
}
public string[] GetStringArray(int N)
{
return Enumerable.Range(0, N)
.Select(e => this.Next)
.ToArray();
}
public int NextInt
{
get
{
return int.Parse(this.Next);
}
}
public int[] GetIntArray(int N)
{
return Enumerable.Range(0, N)
.Select(e => this.NextInt)
.ToArray();
}
public double NextDouble
{
get
{
return double.Parse(this.Next);
}
}
public double[] GetdoubleArray(int N)
{
return Enumerable.Range(0, N)
.Select(e => this.NextDouble)
.ToArray();
}
public long NextLong
{
get
{
return long.Parse(this.Next);
}
}
public long[] GetLongArray(int N)
{
return Enumerable.Range(0, N)
.Select(e => this.NextLong)
.ToArray();
}
public bool IsEnd
{
get
{
this.CheckBuffer();
return this.buffer.Count == 0;
}
}
}
class MainClass : IDisposable
{
Scanner sc;
Writer wr;
const string backPath = "..";
private readonly char dirSep = System.IO.Path.DirectorySeparatorChar;
private readonly string inFilePath = string.Empty;
private readonly string outFilePath = string.Empty;
public MainClass()
{
this.inFilePath = MainClass.backPath
+ this.dirSep
+ MainClass.backPath
+ this.dirSep
+ "in.txt";
this.outFilePath = MainClass.backPath
+ this.dirSep
+ MainClass.backPath
+ this.dirSep
+ "out.txt";
this.wr = new Writer(this.IsReactive);
//this.wr = new Writer(this.outFilePath);
#if DEBUG
if (!this.IsReactive)
{
this.sc = new Scanner(this.inFilePath);
}
else
{
this.sc = new Scanner();
}
#else
this.sc = new Scanner();
#endif
}
static void Main(string[] args)
{
using (var mainClass = new MainClass())
{
mainClass.Solve();
}
}
public void Dispose()
{
if (this.sc != null)
{
this.sc.Dispose();
this.sc = null;
}
if (this.wr != null)
{
this.wr.Dispose();
this.wr = null;
}
#if DEBUG
Console.WriteLine("続行するには何かキーを押してください...");
Console.ReadKey();
#endif
}
void MakeTestCase()
{
var rand = new Random();
if (this.wr != null)
{
this.wr.Dispose();
}
this.wr = new Writer(inFilePath);
}
void Solve()
{
int H = sc.NextInt;
int W = sc.NextInt;
bool[,] A = new bool[H, W];
for (int i = 0; i < H; i++)
{
for (int j = 0; j < W; j++)
{
A[i, j] = sc.NextInt == 1;
}
}
UnionFind uf = new UnionFind(H * W);
int blank = 0;
int[] nh = new int[] { -1, 0, 0, 1 };
int[] nw = new int[] { 0, -1, 1, 0 };
Func<int, int, bool> In = (ii, jj) =>
{
return 0 <= ii && ii < H && 0 <= jj && jj < W;
};
for (int i = 0; i < H; i++)
{
for (int j = 0; j < W; j++)
{
if (A[i, j])
{
for (int k = 0; k < 4; k++)
{
int ni = i + nh[k];
int nj = j + nw[k];
if (In(ni, nj) && A[ni, nj])
{
uf.Unite(i * W + j, ni * W + nj);
}
}
}
else
{
blank++;
}
}
}
wr.WriteLine(uf.Count() - blank);
}
class UnionFind
{
private int[] uni;
int count_;
public UnionFind(int n)
{
this.uni = new int[n];
for (int i = 0; i < n; i++)
{
this.uni[i] = -1;
}
this.count_ = n;
}
public int Count()
{
return this.count_;
}
public int Count(int n)
{
return -this.uni[this.Find(n)];
}
public int Find(int n)
{
return (this.uni[n] < 0 ? n : this.uni[n] = this.Find(this.uni[n]));
}
public bool Unite(int a, int b)
{
a = this.Find(a);
b = this.Find(b);
if (a == b)
{
return false;
}
if (this.uni[a] > this.uni[b])
{
int t = a;
a = b;
b = t;
}
this.uni[a] += this.uni[b];
this.uni[b] = a;
this.count_--;
return true;
}
public bool Same(int a, int b)
{
return this.Find(a) == this.Find(b);
}
}
private bool IsReactive { get; } = false; // TODO: reactive check !!
}
}