結果

問題 No.117 組み合わせの数
ユーザー 14番
提出日時 2016-04-16 12:35:21
言語 C#(csc)
(csc 3.9.0)
結果
TLE  
実行時間 -
コード長 4,625 bytes
コンパイル時間 997 ms
コンパイル使用メモリ 106,880 KB
実行使用メモリ 158,984 KB
最終ジャッジ日時 2024-10-04 10:14:22
合計ジャッジ時間 13,386 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
other TLE * 1
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.Collections.Generic;
using System.Text;
using System.Linq;

class Program
{
    public void Proc()
    {
        Reader.IsDebug = false;
        int queryCount = int.Parse(Reader.ReadLine());

        for (int i = 0; i < queryCount; i++)
        {
            string inpt = Reader.ReadLine();
            char queryType = inpt[0];
            string[] tmp = inpt.Substring(1).Trim().Replace("(", "").Replace(")", "").Split(',');
            int num1 = int.Parse(tmp[0]);
            int num2 = int.Parse(tmp[1]);
            long ans = 0;
            if (queryType == 'C' && num1 > 0 && num2 > 0)
            {
                ans = this.QueryC(num1, num2);
            }
            else if (queryType == 'P' && num1 > 0 && num2 > 0)
            {
                ans = this.QueryC(num1, num2);
                long orderKumiawase = this.orderKumiawase(num2);
                ans = (ans * orderKumiawase) % modNum;
            }
            else if(num1 > 0 && num2 > 0)
            {
                ans = this.QueryH(num1, num2);
            }
            else if (num2 == 0)
            {
                ans = 1;
            }
            Console.WriteLine(ans);
        }


    }

    private long modNum = 1000000000 + 7;

    private long QueryC(int target, int remain)
    {
        if (!dic1.ContainsKey(target))
        {
            dic1.Add(target, new Dictionary<int, long>());
        }
        if (dic1[target].ContainsKey(remain))
        {
            return dic1[target][remain];
        }

        long ans = 0;

        if (target == 0 || target < remain)
        {
            return 0;
        }
        if (target == remain)
        {
            return 1;
        }
        if (remain == 1)
        {
            return target;
        }

        ans = this.QueryC(target - 1, remain);
        ans += this.QueryC(target - 1, remain - 1);
        ans = ans % modNum;
        return ans;
    }
    private long orderKumiawase(long targetCnt)
    {
        if (dic2.ContainsKey(targetCnt))
        {
            return dic2[targetCnt];
        }
        if (targetCnt == 1)
        {
            return targetCnt;
        }
        long ans = 1;
        for (long i = 1; i <= targetCnt; i++)
        {
            if (dic2.ContainsKey(i))
            {
                ans = dic2[i];
            }
            else
            {
                ans *= i;
                ans = ans % modNum;
                dic2.Add(i, ans);
            }

        }
        return ans;
    }
    private long QueryH(int target, int remain)
    {
        if (!dic3.ContainsKey(target))
        {
            dic3.Add(target, new Dictionary<int, long>());
        }
        if (dic3[target].ContainsKey(remain))
        {
            return dic3[target][remain];
        }

        if (target == 0)
        {
            return 0;
        }

        if (remain == 1)
        {
            return target;
        }
        long ans = 0;

        for (int i = target; i >= 1; i--)
        {
            ans += QueryH(i, remain - 1);
        }

        dic3[target].Add(remain, ans);
        return ans;

    }


    private Dictionary<int, Dictionary<int, long>> dic1 = new Dictionary<int, Dictionary<int, long>>();
    private Dictionary<long, long> dic2 = new Dictionary<long, long>();
    private Dictionary<int, Dictionary<int, long>> dic3 = new Dictionary<int, Dictionary<int, long>>();

    

    public class Reader
    {
        public static bool IsDebug = true;
        private static String PlainInput = @"

5
C(1,1000000)
C(0,0)
P(1000000,1000000)
P(1,10)
H(1,1000)


 
";
        private static System.IO.StringReader Sr = null;
        public static string ReadLine()
        {
            if (IsDebug)
            {
                if (Sr == null)
                {
                    Sr = new System.IO.StringReader(PlainInput.Trim());
                }
                return Sr.ReadLine();
            }
            else
            {
                return Console.ReadLine();
            }
        }
        public static int[] GetInt(char delimiter = ' ', bool trim = false)
        {
            string inptStr = ReadLine();
            if (trim)
            {
                inptStr = inptStr.Trim();
            }
            string[] inpt = inptStr.Split(delimiter);
            int[] ret = new int[inpt.Length];
            for (int i = 0; i < inpt.Length; i++)
            {
                ret[i] = int.Parse(inpt[i]);
            }
            return ret;
        }
    }
    static void Main()
    {
        Program prg = new Program();
        prg.Proc();
    }
}
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