結果
| 問題 |
No.553 AlphaCoder Rating
|
| ユーザー |
くれちー
|
| 提出日時 | 2017-08-22 17:17:44 |
| 言語 | C#(csc) (csc 3.9.0) |
| 結果 |
AC
|
| 実行時間 | 54 ms / 1,500 ms |
| コード長 | 2,463 bytes |
| コンパイル時間 | 968 ms |
| コンパイル使用メモリ | 119,204 KB |
| 実行使用メモリ | 19,712 KB |
| 最終ジャッジ日時 | 2024-10-15 04:22:10 |
| 合計ジャッジ時間 | 2,699 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 * 12 |
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.Collections.Generic;
using System.IO;
using System.Linq;
using System.Numerics;
using System.Text;
using static System.Console;
using static System.Convert;
using static System.Math;
using static Extentions;
class IO
{
int idx;
string[] input = In.ReadToEnd().Split(new[] { " ", "\n", "\r" },
StringSplitOptions.RemoveEmptyEntries);
T Get<T>(Func<string, T> parser) => parser(input[idx++]);
public string S => Get(s => s);
public char C => Get(char.Parse);
public int I => Get(int.Parse);
public long L => Get(long.Parse);
public double F => Get(double.Parse);
public decimal D => Get(decimal.Parse);
public BigInteger B => Get(BigInteger.Parse);
T[] Gets<T>(int n, Func<string, T> parser)
=> input.Skip((idx += n) - n).Take(n).Select(parser).ToArray();
public string[] Ss(int n) => Gets(n, s => s);
public char[] Cs(int n) => Gets(n, char.Parse);
public int[] Is(int n) => Gets(n, int.Parse);
public long[] Ls(int n) => Gets(n, long.Parse);
public double[] Fs(int n) => Gets(n, double.Parse);
public decimal[] Ds(int n) => Gets(n, decimal.Parse);
public BigInteger[] Bs(int n) => Gets(n, BigInteger.Parse);
public void Write<T>(params T[] xs) => WriteLine(string.Join(" ", xs));
public void Write(params object[] xs) => WriteLine(string.Join(" ", xs));
}
#region Library
static class Extentions
{
}
#endregion
static class Program
{
public static void Main()
{
var sw = new StreamWriter(OpenStandardOutput()) { NewLine = "\n" };
#if DEBUG
sw.AutoFlush = true;
#else
sw.AutoFlush = false;
#endif
SetOut(sw);
Solve(new IO());
Out.Flush();
}
const int Inf = 114514;
static double Sum(int n, Func<int, double> f)
=> Enumerable.Range(1, n).Select(f).Sum();
static double F(int n)
=> Sqrt(Sum(n, i => Pow(0.81, i))) / Sum(n, i => Pow(0.9, i));
static double f(int n)
=> (F(n) - F(Inf)) / (F(1) - F(Inf)) * 1200;
static double g(int x)
=> Pow(2.0, x / 800.0);
static double gInv(double x)
=> Log(x, 2) * 800.0;
static int Rating(int n)
=> (int)Round(gInv(Sum(n, i => g(RPerf[i - 1]) * Pow(0.9, i)) /
Sum(n, i => Pow(0.9, i))) - f(n));
static int[] RPerf;
static void Solve(IO io)
{
var N = io.I;
RPerf = io.Is(N);
io.Write(Rating(N));
}
}
くれちー