#412627 (C#(csc)) No.133 カードゲーム

• 問題: No.133 カードゲーム
• ユーザー: mnzn
• 提出日時: 2019-12-30 11:30:51
• 言語: C#(csc) (csc 3.9.0)
• 結果: AC
• 実行時間: 33 ms / 5,000 ms
• コード長: 5,421 bytes
• コンパイル時間: 1,209 ms
• コンパイル使用メモリ: 108,672 KB
• 実行使用メモリ: 19,840 KB
• 最終ジャッジ日時: 2024-11-07 23:22:15
• 合計ジャッジ時間: 2,813 ms
• ジャッジサーバーID （参考情報）: judge2 / judge1

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	32 ms; 19,712 KB
testcase_01	AC	32 ms; 19,712 KB
testcase_02	AC	32 ms; 19,712 KB
testcase_03	AC	30 ms; 19,072 KB
testcase_04	AC	32 ms; 19,840 KB
testcase_05	AC	33 ms; 19,840 KB
testcase_06	AC	32 ms; 19,712 KB
testcase_07	AC	32 ms; 19,584 KB
testcase_08	AC	33 ms; 19,712 KB
testcase_09	AC	32 ms; 19,712 KB
testcase_10	AC	31 ms; 19,712 KB
testcase_11	AC	32 ms; 19,584 KB
testcase_12	AC	32 ms; 19,712 KB
testcase_13	AC	32 ms; 19,712 KB
testcase_14	AC	32 ms; 19,712 KB
testcase_15	AC	32 ms; 19,712 KB
testcase_16	AC	32 ms; 19,584 KB
testcase_17	AC	31 ms; 19,072 KB
testcase_18	AC	32 ms; 19,840 KB
testcase_19	AC	32 ms; 19,840 KB
testcase_20	AC	31 ms; 19,840 KB
testcase_21	AC	32 ms; 19,840 KB
testcase_22	AC	32 ms; 19,712 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.Collections.Generic;
using System.Linq;
using System.Text;

class Program
{
    static void Main(string[] args)
    {
        var N = sc.ReadInt();
        var A = sc.ReadIntArray(N);
        var B = sc.ReadIntArray(N);
        var permA = Permutation.All(A);
        var permB = Permutation.All(B);
        var all = 0;
        var awin = 0;
        foreach (var patternA in permA)
        {
            foreach (var patternB in permB)
            {
                all++;
                var count = 0;
                for (int i = 0; i < N; i++)
                {
                    var a = patternA[i];
                    var b = patternB[i];
                    if (a > b) count++;
                }
                if (count > N / 2) awin++;
            }
        }
        var ans = (double)awin / all;
        Console.WriteLine(ans);
    }
    static class Permutation
    {
        private static void Search<T>(List<T[]> perms, Stack<T> stack, T[] a)
        {
            int N = a.Length;
            if (N == 0)
            {
                perms.Add(stack.Reverse().ToArray());
            }
            else
            {
                var b = new T[N - 1];
                Array.Copy(a, 1, b, 0, N - 1);
                for (int i = 0; i < a.Length; ++i)
                {
                    stack.Push(a[i]);
                    Search(perms, stack, b);
                    if (i < b.Length) { b[i] = a[i]; }
                    stack.Pop();
                }
            }
        }
        public static List<T[]> All<T>(params T[] source)
        {
            var perms = new List<T[]>();
            Search(perms, new Stack<T>(), source);
            return perms;
        }
    }
    static Scanner sc = new Scanner();
}
class Scanner
{
    string[] S = new string[0];
    int Index = 0;
    char[] Separators = new char[] { ' ' };

    public string Next()
    {
        if (this.Index < this.S.Length) return this.S[this.Index++];
        var line = "";
        while (line == "") line = Console.ReadLine();
        this.S = line.Split(this.Separators, StringSplitOptions.RemoveEmptyEntries);
        if (this.S.Length == 0) return this.Next();
        this.Index = 0;
        return this.S[this.Index++];
    }
    public string ReadStr()
    {
        return this.Next();
    }
    public char ReadChar()
    {
        return this.Next()[0];
    }
    public int ReadInt()
    {
        return int.Parse(this.Next());
    }
    public uint ReadUInt()
    {
        return uint.Parse(this.Next());
    }
    public long ReadLong()
    {
        return long.Parse(this.Next());
    }
    public double ReadDouble()
    {
        return double.Parse(this.Next());
    }
    public Tuple<int, int> ReadTup(int add = 0)
    {
        return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add);
    }
    public Tuple<long, long> ReadTupLong(int add = 0)
    {
        return Tuple.Create(this.ReadLong() + add, this.ReadLong() + add);
    }
    public Tuple<int, int, int> ReadTup3(int add = 0)
    {
        return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add);
    }
    public Tuple<int, int, int, int> ReadTup4(int add = 0)
    {
        return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add);
    }
    public int[] ReadIntArray(int n)
    {
        var array = new int[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadInt();
        }
        return array;
    }
    public long[] ReadLongArray(int n)
    {
        var array = new long[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadLong();
        }
        return array;
    }
    public double[] ReadDoubleArray(int n)
    {
        var array = new double[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadDouble();
        }
        return array;
    }
    public char[] ReadCharArray(int n)
    {
        var array = new char[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadChar();
        }
        return array;
    }
    public string[] ReadStrArray(int n)
    {
        var array = new string[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadStr();
        }
        return array;
    }
    public Tuple<long, long>[] ReadTupLongArray(int n, int add = 0)
    {
        var array = new Tuple<long, long>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTupLong(add);
        }
        return array;
    }
    public Tuple<int, int>[] ReadTupArray(int n, int add = 0)
    {
        var array = new Tuple<int, int>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTup(add);
        }
        return array;
    }
    public Tuple<int, int, int>[] ReadTup3Array(int n, int add = 0)
    {
        var array = new Tuple<int, int, int>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTup3(add);
        }
        return array;
    }
    public Tuple<int, int, int, int>[] ReadTup4Array(int n, int add = 0)
    {
        var array = new Tuple<int, int, int, int>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTup4(add);
        }
        return array;
    }
}