結果
| 問題 | No.174 カードゲーム（Hard） |
| ユーザー |
 紙ぺーぱー
|
| 提出日時 | 2015-06-09 23:09:26 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
AC
|
| 実行時間 | 431 ms / 2,000 ms |
| コード長 | 5,801 bytes |
| コンパイル時間 | 941 ms |
| コンパイル使用メモリ | 116,936 KB |
| 実行使用メモリ | 42,724 KB |
| 最終ジャッジ日時 | 2024-07-06 21:38:53 |
| 合計ジャッジ時間 | 4,880 ms |
|
ジャッジサーバーID （参考情報） |
judge3 / 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 | 24 ms
24,040 KB |
| testcase_01 | AC | 26 ms
25,192 KB |
| testcase_02 | AC | 416 ms
40,544 KB |
| testcase_03 | AC | 414 ms
40,492 KB |
| testcase_04 | AC | 410 ms
38,448 KB |
| testcase_05 | AC | 431 ms
40,432 KB |
| testcase_06 | AC | 408 ms
42,724 KB |
| testcase_07 | AC | 419 ms
40,692 KB |
| testcase_08 | AC | 411 ms
40,676 KB |
| testcase_09 | AC | 416 ms
42,480 KB |
| testcase_10 | AC | 26 ms
24,936 KB |
| testcase_11 | AC | 24 ms
25,056 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;
using System.Collections.Generic;
using Debug = System.Diagnostics.Debug;
using StringBuilder = System.Text.StringBuilder;
using System.Numerics;
//using System.Threading.Tasks;
namespace Program
{
public class Solver
{
public void Solve()
{
var n = sc.Integer();
var p = sc.Double();
var q = sc.Double();
var a = sc.Integer(n);
var b = sc.Integer(n);
Array.Sort(a); Array.Sort(b);
var P = new double[n, n];
var Q = new double[n, n];
var dp1 = new double[1 << n];
var dp2 = new double[1 << n];
dp1[0] = dp2[0] = 1;
for (int i = 0; i < 1 << n; i++)
{
var popcnt = 0;
for (int j = 0; j < n; j++)
if ((i >> j & 1) == 1) popcnt++;
var cnt = 0;
for (int j = 0; j < n; j++)
{
if ((i >> j & 1) == 1) continue;
var r = popcnt == n - 1 ? 1.0 : cnt == 0 ? p : (1 - p) / (n - 1 - popcnt);
var s = popcnt == n - 1 ? 1.0 : cnt == 0 ? q : (1 - q) / (n - 1 - popcnt);
P[j, popcnt] += dp1[i] * r;
Q[j, popcnt] += dp2[i] * s;
dp1[i | 1 << j] += dp1[i] * r;
dp2[i | 1 << j] += dp2[i] * s;
cnt++;
}
}
var E = 0.0;
for (int i = 0; i < n; i++)
for (int j = 0; j < n; j++)
for (int k = 0; k < n; k++)
{
var r = P[j, i] * Q[k, i];
if (a[j] > b[k])
E += r * (a[j] + b[k]);
}
IO.Printer.Out.WriteLine(E);
}
public IO.StreamScanner sc = new IO.StreamScanner(Console.OpenStandardInput());
static T[] Enumerate<T>(int n, Func<int, T> f) { var a = new T[n]; for (int i = 0; i < n; ++i) a[i] = f(i); return a; }
static public void Swap<T>(ref T a, ref T b) { var tmp = a; a = b; b = tmp; }
}
}
#region main
static class Ex
{
static public string AsString(this IEnumerable<char> ie) { return new string(System.Linq.Enumerable.ToArray(ie)); }
static public string AsJoinedString<T>(this IEnumerable<T> ie, string st = " ") { return string.Join(st, ie); }
static public void Main()
{
var solver = new Program.Solver();
solver.Solve();
Program.IO.Printer.Out.Flush();
}
}
#endregion
#region Ex
namespace Program.IO
{
using System.IO;
using System.Text;
using System.Globalization;
public class Printer : StreamWriter
{
static Printer() { Out = new Printer(Console.OpenStandardOutput()) { AutoFlush = false }; }
public static Printer Out { get; set; }
public override IFormatProvider FormatProvider { get { return CultureInfo.InvariantCulture; } }
public Printer(System.IO.Stream stream) : base(stream, new UTF8Encoding(false, true)) { }
public Printer(System.IO.Stream stream, Encoding encoding) : base(stream, encoding) { }
public void Write<T>(string format, T[] source) { base.Write(format, source.OfType<object>().ToArray()); }
public void WriteLine<T>(string format, T[] source) { base.WriteLine(format, source.OfType<object>().ToArray()); }
}
public class StreamScanner
{
public StreamScanner(Stream stream) { str = stream; }
public readonly Stream str;
private readonly byte[] buf = new byte[1024];
private int len, ptr;
public bool isEof = false;
public bool IsEndOfStream { get { return isEof; } }
private byte read()
{
if (isEof) return 0;
if (ptr >= len) { ptr = 0; if ((len = str.Read(buf, 0, 1024)) <= 0) { isEof = true; return 0; } }
return buf[ptr++];
}
public char Char() { byte b = 0; do b = read(); while ((b < 33 || 126 < b) && !isEof); return (char)b; }
public string Scan()
{
var sb = new StringBuilder();
for (var b = Char(); b >= 33 && b <= 126; b = (char)read())
sb.Append(b);
return sb.ToString();
}
public string ScanLine()
{
var sb = new StringBuilder();
for (var b = Char(); b != '\n'; b = (char)read())
if (b == 0) break;
else if (b != '\r') sb.Append(b);
return sb.ToString();
}
public long Long()
{
if (isEof) return long.MinValue;
long ret = 0; byte b = 0; var ng = false;
do b = read();
while (b != '-' && (b < '0' || '9' < b));
if (b == '-') { ng = true; b = read(); }
for (; true; b = read())
{
if (b < '0' || '9' < b)
return ng ? -ret : ret;
else ret = ret * 10 + b - '0';
}
}
public int Integer() { return (isEof) ? int.MinValue : (int)Long(); }
public double Double() { return double.Parse(Scan(), CultureInfo.InvariantCulture); }
private T[] enumerate<T>(int n, Func<T> f)
{
var a = new T[n];
for (int i = 0; i < n; ++i) a[i] = f();
return a;
}
public char[] Char(int n) { return enumerate(n, Char); }
public string[] Scan(int n) { return enumerate(n, Scan); }
public double[] Double(int n) { return enumerate(n, Double); }
public int[] Integer(int n) { return enumerate(n, Integer); }
public long[] Long(int n) { return enumerate(n, Long); }
}
}
#endregion