結果
問題 | No.174 カードゲーム(Hard) |
ユーザー | eitaho |
提出日時 | 2015-03-27 15:32:12 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 1,052 ms / 2,000 ms |
コード長 | 3,864 bytes |
コンパイル時間 | 2,520 ms |
コンパイル使用メモリ | 116,240 KB |
実行使用メモリ | 246,352 KB |
最終ジャッジ日時 | 2024-07-06 21:35:13 |
合計ジャッジ時間 | 11,347 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | 177 ms
80,324 KB |
testcase_01 | AC | 217 ms
98,404 KB |
testcase_02 | AC | 1,045 ms
244,212 KB |
testcase_03 | AC | 1,041 ms
244,296 KB |
testcase_04 | AC | 1,031 ms
244,420 KB |
testcase_05 | AC | 1,039 ms
244,216 KB |
testcase_06 | AC | 1,041 ms
246,352 KB |
testcase_07 | AC | 1,030 ms
246,212 KB |
testcase_08 | AC | 1,030 ms
242,004 KB |
testcase_09 | AC | 1,052 ms
244,288 KB |
testcase_10 | AC | 186 ms
81,300 KB |
testcase_11 | AC | 179 ms
81,208 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.IO; using System.Linq; using System.Text; using System.Collections.Generic; using System.Diagnostics; using Enu = System.Linq.Enumerable; class Program { public void Solve() { int N = Reader.Int(); double PA = Reader.Double(), PB = Reader.Double(); int[] A = Reader.IntArray(N), B = Reader.IntArray(N); //var sw = Stopwatch.StartNew(); Array.Sort(A); Array.Sort(B); for (int i = 0; i < bitdp.Length; i++) bitdp[i] = new double[N]; var ProbA = GetProb(N, PA); for (int i = 0; i < bitdp.Length; i++) Array.Clear(bitdp[i], 0, bitdp[i].Length); var ProbB = GetProb(N, PB); double ans = 0; for (int ai = 0; ai < N; ai++) for (int bi = 0; bi < N; bi++) if (A[ai] > B[bi]) for (int pos = 0; pos < N; pos++) ans += (A[ai] + B[bi]) * ProbA[ai, pos] * ProbB[bi, pos]; Console.WriteLine(ans); //Console.WriteLine(sw.ElapsedMilliseconds); //Console.ReadLine(); } double[][] bitdp = new double[1 << 20][]; double[,] GetProb(int N, double selectMinProb) { bitdp[0][0] = 1; var res = new double[N, N]; // i, at for (int mask = 0; mask < (1 << N); mask++) { int num = BitCount(mask); int rem = N - num; int min = -1; double currProb = 0; for (int i = 0; i < N; i++) { currProb += bitdp[mask][i]; if (min == -1 && (mask >> i & 1) == 0) min = i; } for (int next = 0; next < N; next++) if ((mask >> next & 1) == 0) { double selectProb = (rem == 1) ? 1 : (next == min) ? selectMinProb : (1 - selectMinProb) / (rem - 1); double p = currProb * selectProb; bitdp[mask | 1 << next][next] += p; res[next, num] += p; } } return res; } int BitCount(int x) { return x == 0 ? 0 : 1 + BitCount(x & x - 1); } } class Entry { static void Main() { new Program().Solve(); } } class Reader { private static TextReader reader = Console.In; private static readonly char[] separator = { ' ' }; private static readonly StringSplitOptions op = StringSplitOptions.RemoveEmptyEntries; private static string[] A = new string[0]; private static int i; private static void Init() { A = new string[0]; } public static void Set(TextReader r) { reader = r; Init(); } public static void Set(string file) { reader = new StreamReader(file); Init(); } public static bool HasNext() { return CheckNext(); } public static string String() { return Next(); } public static int Int() { return int.Parse(Next()); } public static long Long() { return long.Parse(Next()); } public static double Double() { return double.Parse(Next()); } public static int[] IntLine() { return Array.ConvertAll(Split(Line()), int.Parse); } public static int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); } public static int[][] IntTable(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); } public static string[] StringArray(int N) { return Enu.Range(0, N).Select(i => Line()).ToArray(); } public static string Line() { return reader.ReadLine().Trim(); } private static string[] Split(string s) { return s.Split(separator, op); } private static string Next() { CheckNext(); return A[i++]; } private static bool CheckNext() { if (i < A.Length) return true; string line = reader.ReadLine(); if (line == null) return false; if (line == "") return CheckNext(); A = Split(line); i = 0; return true; } }