結果

問題 No.210 探し物はどこですか?
ユーザー EmKjp
提出日時 2015-05-16 00:05:10
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 377 ms / 2,000 ms
コード長 5,378 bytes
コンパイル時間 1,253 ms
コンパイル使用メモリ 110,976 KB
実行使用メモリ 20,480 KB
最終ジャッジ日時 2024-07-06 04:37:06
合計ジャッジ時間 16,006 ms
ジャッジサーバーID
(参考情報)
judge4 / judge2
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 3
other AC * 43
権限があれば一括ダウンロードができます
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

diff #
プレゼンテーションモードにする

using System;
using System.IO;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
public class PriorityQueue<T> {
private T[] array = new T[100];
private int size = 0;
private Comparison<T> comp;
public PriorityQueue() {
this.comp = Comparer<T>.Default.Compare;
}
public PriorityQueue(Comparison<T> comp) {
this.comp = comp;
}
private void Swap(int a, int b) {
T t = array[a];
array[a] = array[b];
array[b] = t;
}
private void Expand() {
var newlist = new T[array.Length * 2];
Array.Copy(array, newlist, array.Length);
array = newlist;
}
public bool Any() {
return size > 0;
}
public void Enqueue(T newValue) {
if (size >= array.Length) {
Expand();
}
array[size++] = newValue;
int pos = size - 1;
while (pos > 0) {
int parent = (pos - 1) / 2;
if (comp(array[parent], array[pos]) > 0) {
Swap(parent, pos);
pos = parent;
} else
break;
}
}
public T Dequeue() {
T top = array[0];
array[0] = array[--size];
int pos = 0;
while (pos * 2 + 1 < size) {
int left = pos * 2 + 1;
int right = left + 1;
int next = left;
if (right < size && comp(array[left], array[right]) > 0)
next = right;
if (comp(array[pos], array[next]) > 0) {
Swap(next, pos);
pos = next;
} else
break;
}
return top;
}
};
public struct Node {
public double Percentage { get; set; }
public int Room { get; set; }
}
partial class Solver {
public void Run() {
var n = ni();
var p = ni(n);
var q = ni(n);
//
var percentage = p.Select(x => x / 1000.0).ToArray();
//
var find = q.Select(x => x / 100.0).ToArray();
var qu = new PriorityQueue<Node>((n1, n2) => -n1.Percentage.CompareTo(n2.Percentage));
double ans = 0;
for (int i = 0; i < n; i++) {
qu.Enqueue(new Node { Percentage = percentage[i] * find[i], Room = i });
}
for (int i = 1; i < 1000000; i++) {
var node = qu.Dequeue();
ans += i * node.Percentage;
node.Percentage *= (1.0 - find[node.Room]);
qu.Enqueue(node);
}
cout.WriteLine("{0:F10}", ans);
}
}
// PREWRITEN CODE BEGINS FROM HERE
partial class Solver : Scanner {
public static void Main(string[] args) {
/*new Solver("1 1000 50", Console.Out).Run();
new Solver(@"10
100 100 100 100 100 100 100 100 100 100
100 100 100 100 100 100 100 100 100 100", Console.Out).Run();
new Solver(@"10
64 201 4 30 232 64 197 7 102 99
28 43 94 52 24 33 97 55 36 89", Console.Out).Run();*/
new Solver(Console.In, Console.Out).Run();
}
TextReader cin;
TextWriter cout;
public Solver(TextReader reader, TextWriter writer)
: base(reader) {
this.cin = reader;
this.cout = writer;
}
public Solver(string input, TextWriter writer)
: this(new StringReader(input), writer) {
}
public int ni() { return NextInt(); }
public int[] ni(int n) { return NextIntArray(n); }
public long nl() { return NextLong(); }
public long[] nl(int n) { return NextLongArray(n); }
public string ns() { return Next(); }
}
public class Scanner {
private TextReader Reader;
private Queue<String> TokenQueue = new Queue<string>();
private CultureInfo ci = CultureInfo.InvariantCulture;
public Scanner()
: this(Console.In) {
}
public Scanner(TextReader reader) {
this.Reader = reader;
}
public int NextInt() { return Int32.Parse(Next(), ci); }
public long NextLong() { return Int64.Parse(Next(), ci); }
public double NextDouble() { return double.Parse(Next(), ci); }
public string[] NextArray(int size) {
var array = new string[size];
for (int i = 0; i < size; i++) array[i] = Next();
return array;
}
public int[] NextIntArray(int size) {
var array = new int[size];
for (int i = 0; i < size; i++) array[i] = NextInt();
return array;
}
public long[] NextLongArray(int size) {
var array = new long[size];
for (int i = 0; i < size; i++) array[i] = NextLong();
return array;
}
public String Next() {
if (TokenQueue.Count == 0) {
if (!StockTokens()) throw new InvalidOperationException();
}
return TokenQueue.Dequeue();
}
public bool HasNext() {
if (TokenQueue.Count > 0)
return true;
return StockTokens();
}
private bool StockTokens() {
while (true) {
var line = Reader.ReadLine();
if (line == null) return false;
var tokens = line.Trim().Split(" ".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
if (tokens.Length == 0) continue;
foreach (var token in tokens)
TokenQueue.Enqueue(token);
return true;
}
}
}
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