結果

問題 No.210 探し物はどこですか？
ユーザー 紙ぺーぱー紙ぺーぱー
提出日時 2015-05-22 14:10:41
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 507 ms / 2,000 ms
コード長 6,769 bytes
コンパイル時間 1,030 ms
コンパイル使用メモリ 118,848 KB
実行使用メモリ 69,788 KB
最終ジャッジ日時 2024-07-06 04:28:59
合計ジャッジ時間 17,310 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge3
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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 228 ms
51,932 KB
testcase_01 AC 236 ms
58,508 KB
testcase_02 AC 230 ms
58,532 KB
testcase_03 AC 281 ms
56,152 KB
testcase_04 AC 198 ms
33,668 KB
testcase_05 AC 189 ms
28,984 KB
testcase_06 AC 195 ms
27,060 KB
testcase_07 AC 187 ms
33,164 KB
testcase_08 AC 285 ms
66,824 KB
testcase_09 AC 285 ms
66,692 KB
testcase_10 AC 287 ms
58,644 KB
testcase_11 AC 225 ms
47,108 KB
testcase_12 AC 220 ms
44,812 KB
testcase_13 AC 327 ms
66,820 KB
testcase_14 AC 323 ms
64,644 KB
testcase_15 AC 265 ms
42,632 KB
testcase_16 AC 254 ms
46,736 KB
testcase_17 AC 251 ms
41,856 KB
testcase_18 AC 378 ms
68,484 KB
testcase_19 AC 397 ms
68,616 KB
testcase_20 AC 378 ms
52,060 KB
testcase_21 AC 376 ms
53,916 KB
testcase_22 AC 387 ms
66,580 KB
testcase_23 AC 442 ms
52,124 KB
testcase_24 AC 463 ms
53,544 KB
testcase_25 AC 463 ms
56,132 KB
testcase_26 AC 466 ms
64,268 KB
testcase_27 AC 450 ms
66,060 KB
testcase_28 AC 362 ms
68,488 KB
testcase_29 AC 369 ms
66,576 KB
testcase_30 AC 392 ms
60,224 KB
testcase_31 AC 366 ms
52,192 KB
testcase_32 AC 352 ms
50,020 KB
testcase_33 AC 461 ms
62,092 KB
testcase_34 AC 458 ms
50,080 KB
testcase_35 AC 507 ms
68,364 KB
testcase_36 AC 461 ms
51,320 KB
testcase_37 AC 470 ms
69,788 KB
testcase_38 AC 371 ms
48,032 KB
testcase_39 AC 352 ms
50,100 KB
testcase_40 AC 366 ms
62,116 KB
testcase_41 AC 359 ms
58,800 KB
testcase_42 AC 348 ms
50,120 KB
testcase_43 AC 67 ms
30,856 KB
testcase_44 AC 188 ms
61,380 KB
testcase_45 AC 191 ms
31,168 KB
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 # 

using System;
using System.Linq;
using System.Collections.Generic;
using Debug = System.Diagnostics.Debug;
using StringBuilder = System.Text.StringBuilder;
using System.Numerics;
namespace Program
{

    public class Solver
    {
        public void Solve()
        {
            var n = sc.Integer();
            var p = Enumerate(n, x => sc.Double() / 1000);
            var q = Enumerate(n, x => sc.Double() / 100);
            var pq = new PriorityQueue<KeyValuePair<int, double>>((l, r) => r.Value.CompareTo(l.Value));
            for (int i = 0; i < n; i++)
                pq.Enqueue(new KeyValuePair<int, double>(i, p[i] * q[i]));
            var ans = 0.0;
            for (int _ = 1; _ <= 1000000; _++)
            {
                var x = pq.Dequeue();
                ans += _ * x.Value;
                pq.Enqueue(new KeyValuePair<int, double>(x.Key, (1 - q[x.Key]) * x.Value));
            }
            IO.Printer.Out.WriteLine("{0:0.000000000000}",ans);
        }
        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 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, IEnumerable<T> source) { base.Write(format, source.OfType<object>().ToArray()); }
        public void WriteLine<T>(string format, IEnumerable<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 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); }
    }
}

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 PriorityQueue and PairingHeap
public class PriorityQueue<T>
{
    PairingHeap<T> top;
    Comparison<T> compare;
    int size;
    public int Count { get { return size; } }
    public PriorityQueue() : this(Comparer<T>.Default) { }
    public PriorityQueue(Comparison<T> comparison) { compare = comparison; }
    public PriorityQueue(IComparer<T> comparer) { compare = comparer.Compare; }
    public void Enqueue(T item)
    {
        var heap = new PairingHeap<T>(item);
        top = PairingHeap<T>.Merge(top, heap, compare);
        size++;
    }
    public T Dequeue()
    {
        var ret = top.Key;
        size--;
        top = PairingHeap<T>.Pop(top, compare);
        return ret;
    }
    public bool Any() { return size > 0; }
    public T Peek() { return top.Key; }
}

#region PairingHeap
public class PairingHeap<T>
{
    public PairingHeap(T k) { key = k; }
    private readonly T key;
    public T Key { get { return key; } }
    private PairingHeap<T> head;
    private PairingHeap<T> next;
    static public PairingHeap<T> Pop(PairingHeap<T> s, Comparison<T> compare)
    {
        return MergeLst(s.head, compare);
    }
    static public PairingHeap<T> Merge(PairingHeap<T> l, PairingHeap<T> r, Comparison<T> compare)
    {
        if (l == null || r == null) return l == null ? r : l;
        if (compare(l.key, r.key) > 0) Swap(ref l, ref r);
        r.next = l.head;
        l.head = r;
        return l;
    }
    static public PairingHeap<T> MergeLst(PairingHeap<T> s, Comparison<T> compare)
    {
        var n = new PairingHeap<T>(default(T));
        while (s != null)
        {
            PairingHeap<T> a = s, b = null;
            s = s.next; a.next = null;
            if (s != null) { b = s; s = s.next; b.next = null; }
            a = Merge(a, b, compare); a.next = n.next;
            n.next = a;
        }
        while (n.next != null)
        {
            var j = n.next;
            n.next = n.next.next;
            s = Merge(j, s, compare);
        }
        return s;
    }
    static void Swap(ref PairingHeap<T> l, ref PairingHeap<T> r) { var t = l; l = r; r = t; }
}
#endregion
#endregion
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