結果
問題 | No.162 8020運動 |
ユーザー |
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提出日時 | 2015-03-06 21:20:37 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 216 ms / 5,000 ms |
コード長 | 3,254 bytes |
コンパイル時間 | 1,004 ms |
コンパイル使用メモリ | 118,260 KB |
実行使用メモリ | 28,324 KB |
最終ジャッジ日時 | 2024-06-24 09:55:32 |
合計ジャッジ時間 | 5,672 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 26 |
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.Diagnostics;using System.Collections.Generic;using System.Text.RegularExpressions;using Enu = System.Linq.Enumerable;class Program{static readonly int NumTeeth = 14;static readonly int Target = 80;double[] Prob;double?[,] memo;void Solve(){int Age = reader.Int();Prob = Enu.Range(0, 3).Select(i => 1 - reader.Double() / 100).ToArray();int rem = Target - Age;memo = new double?[rem + 1, NumTeeth + 1];double ans = Rec(rem, NumTeeth) * 2;Console.WriteLine(ans);}private double Rec(int rem, int len){if (rem == 0 || len == 0) return len;if (memo[rem, len].HasValue) return memo[rem, len].Value;if (len == 1) return Prob[0] * Rec(rem - 1, 1);double res = 0;for (int next = 0; next < (1 << len); next++){int count = 0;double p = 1, sum = 0;for (int i = 0; i <= len; i++){if ((next >> i & 1) == 1){count++;p *= (i == 0 || i == len - 1) ? Prob[1] : Prob[2];}else{sum += Rec(rem - 1, count);count = 0;if (i < len) p *= (i == 0 || i == len - 1) ? 1 - Prob[1] : 1 - Prob[2];}}res += p * sum;}memo[rem, len] = res;return res;}int BitCount(int x) { return x == 0 ? 0 : 1 + BitCount(x & x - 1); }Reader reader = new Reader(Console.In);static void Main() { new Program().Solve(); }}class Reader{private readonly TextReader reader;private readonly char[] separator = { ' ' };private readonly StringSplitOptions removeOp = StringSplitOptions.RemoveEmptyEntries;private string[] A = new string[0];private int i;public Reader(TextReader r) { reader = r; }public Reader(string file) { reader = new StreamReader(file); }public bool HasNext() { return Enqueue(); }public string String() { return Dequeue(); }public int Int() { return int.Parse(Dequeue()); }public long Long() { return long.Parse(Dequeue()); }public double Double() { return double.Parse(Dequeue()); }public int[] IntLine() { var s = Line(); return s == "" ? new int[0] : Array.ConvertAll(Split(s), int.Parse); }public int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); }public int[][] IntGrid(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); }public string[] StringArray(int N) { return Enu.Range(0, N).Select(i => Line()).ToArray(); }public string Line() { return reader.ReadLine().Trim(); }private string[] Split(string s) { return s.Split(separator, removeOp); }private bool Enqueue(){if (i < A.Length) return true;string line = reader.ReadLine();if (line == null) return false;if (line == "") return Enqueue();A = Split(line);i = 0;return true;}private string Dequeue() { Enqueue(); return A[i++]; }}