結果
| 問題 | No.108 トリプルカードコンプ |
| コンテスト | |
| ユーザー |
syoken_desuka
|
| 提出日時 | 2015-03-05 05:53:58 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
AC
|
| 実行時間 | 47 ms / 5,000 ms |
| コード長 | 5,222 bytes |
| コンパイル時間 | 4,575 ms |
| コンパイル使用メモリ | 111,608 KB |
| 実行使用メモリ | 31,056 KB |
| 最終ジャッジ日時 | 2024-06-24 08:02:03 |
| 合計ジャッジ時間 | 2,581 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 20 |
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
#region ZIPPER
using System;
using System.Collections.Generic;
using System.Collections;
using System.Linq;
using System.Text;
using System.Numerics;
using sc = Scanner;
class Program
{
static void Main(string[] args)
{
Solver solver = new Solver();
solver.Solve();
#if DEBUG
System.Console.WriteLine("続行するには何かキーを押してください...");
System.Console.ReadKey();
#endif
}
}
/// <summary>
/// Java風のスキャナー,自作(某最速の人を参考)
/// </summary>
public static class Scanner
{
public static string NextString()
{
string tmp = "";
while (true)
{
int readData;
string data;
readData = Console.Read();
if (readData == -1) //EOF
{
break;
}
data = char.ConvertFromUtf32(readData);
if (data == " " || data == "\n")
{
break;
}
tmp += data;
}
return tmp;
}
public static int NextInt()
{
string tmp = "";
while (true)
{
int readData;
string data;
readData = Console.Read();
if (readData == -1) //EOF
{
break;
}
data = char.ConvertFromUtf32(readData);
if (data == " " || data == "\n")
{
break;
}
tmp += data;
}
return int.Parse(tmp);
}
public static long NextLong()
{
string tmp = "";
while (true)
{
int readData;
string data;
readData = Console.Read();
if (readData == -1) //EOF
{
break;
}
data = char.ConvertFromUtf32(readData);
if (data == " " || data == "\n")
{
break;
}
tmp += data;
}
return long.Parse(tmp);
}
public static double NextDouble()
{
string tmp = "";
while (true)
{
int readData;
string data;
readData = Console.Read();
if (readData == -1) //EOF
{
break;
}
data = char.ConvertFromUtf32(readData);
if (data == " " || data == "\n")
{
break;
}
tmp += data;
}
return double.Parse(tmp);
}
public static string[] NextStrArray()
{
return Console.ReadLine().Split(' ');
}
public static int[] NextIntArray()
{
string[] s = NextStrArray();
int[] a = new int[s.Length];
for (int i = 0; i < a.Length; i++)
{
a[i] = int.Parse(s[i]);
}
return a;
}
public static long[] NextLongArray()
{
string[] s = NextStrArray();
long[] a = new long[s.Length];
for (int i = 0; i < a.Length; i++)
{
a[i] = long.Parse(s[i]);
}
return a;
}
public static double[] NextDoubleArray()
{
string[] s = NextStrArray();
double[] a = new double[s.Length];
for (int i = 0; i < a.Length; i++)
{
a[i] = double.Parse(s[i]);
}
return a;
}
}
#endregion ZIPPER
public class Solver
{
#region IGNORE_ME
public Solver()
{
//こんすとらくたん きにしなくてよろしい
}
#endregion IGNORE_ME
#region FIELD
#endregion FIELD
public void Solve()
{
int n = sc.NextInt();
double[, ,] dp = new double[ n + 1, n + 1, n + 1];// ima 0, ima 1, ima 2;
int[] start = new int[4];
int[] a = sc.NextIntArray();
for (int i = 0; i < n; i++)
{
a[i] = a[i] > 3 ? 3 : a[i];
start[a[i]]++;
}
for (int i = 0; i < n+1; i++)
{
for (int j = 0; j < n+1; j++)
{
for (int k = 0; k < n + 1; k++)
{
if ((i + j + k > n) || (i + j + k == 0))
{
continue;
}
double noneGet = 1.0 * i / n;
double oneGet = 1.0 * j / n;
double twoGet = 1.0 * k / n;
double daburi = 1.0 * (n - i - j - k) / n;
double daburiKeisu = daburi == 0 ? 1 : (1 / (1 - daburi));
dp[i, j, k] = daburiKeisu
* (noneGet * dp[Math.Max(i - 1, 0), Math.Min(j + 1, n), k]
+ oneGet * dp[i, Math.Max(j - 1, 0), Math.Min(k + 1, n)]
+ twoGet * dp[i, j, Math.Max(k - 1, 0)]
+ 1);
#if DEBUG
Console.WriteLine("{0} {1} {2}", i, j, k);
Console.WriteLine("{0} {1} {2}: {3}", noneGet, oneGet, twoGet, dp[i, j, k]);
#endif
}
}
}
Console.WriteLine(dp[start[0], start[1], start[2]]);
#if DEBUG
Console.WriteLine("");//local check
#endif
}
}
syoken_desuka