#39610 (C#(csc)) No.129 お年玉(2)

• 問題: No.129 お年玉(2)
• ユーザー: 明智重蔵
• 提出日時: 2015-07-26 13:58:22
• 言語: C#(csc) (csc 3.9.0)
• 結果: AC
• 実行時間: 373 ms / 5,000 ms
• コード長: 3,467 bytes
• コンパイル時間: 4,047 ms
• コンパイル使用メモリ: 113,052 KB
• 実行使用メモリ: 18,496 KB
• 最終ジャッジ日時: 2024-11-28 00:06:52
• 合計ジャッジ時間: 10,754 ms
• ジャッジサーバーID （参考情報）: judge1 / judge4

ファイルパターン	結果
sample	AC * 3
other	AC * 46

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

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using System;
using System.Collections.Generic;
class Program
{
    static string InputPattern = "Input4";
    static List<string> GetInputList()
    {
        var WillReturn = new List<string>();
        if (InputPattern == "Input1") {
            WillReturn.Add("10000");
            WillReturn.Add("5");
        }
        else if (InputPattern == "Input2") {
            WillReturn.Add("24500");
            WillReturn.Add("9");
        }
        else if (InputPattern == "Input3") {
            WillReturn.Add("1000");
            WillReturn.Add("6");
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }
    static void Main()
    {
        Eratosthenes();
        List<string> InputList = GetInputList();
        ulong N = ulong.Parse(InputList[0]);
        int M = int.Parse(InputList[1]);
        //余った金額
        int RestVal = (int)(N % (1000 * (ulong)M));
        Console.WriteLine(DeriveCombiCnt(M, RestVal / 1000));
    }
    //Aつの袋からBつの袋を選ぶ組み合わせの数を求める
    static ulong DeriveCombiCnt(int pA, int pB)
    {
        if (pA == 0) return 1;
        pB = Math.Min(pB, pA - pB);
        var ProdList = new List<int>();
        var DeviList = new List<int>();
        for (int I = pA; I >= pA - pB + 1; I--) {
            ProdList.Add(I);
        }
        for (int I = 1; I <= pB; I++) {
            DeviList.AddRange(DeriveSoinsuuArr(I));
        }
        //分母を全てはらってから、総積を1000000000で割った余りを求める
        for (int I = DeviList.Count - 1; 0 <= I; I--) {
            for (int J = 0; J <= ProdList.Count - 1; J++) {
                if (ProdList[J] % DeviList[I] == 0) {
                    ProdList[J] /= DeviList[I];
                    DeviList.RemoveAt(I);
                    break;
                }
            }
        }
        ulong WillReturn = 1;
        ProdList.ForEach(X => WillReturn = (WillReturn * (ulong)X) % 1000000000);
        return WillReturn;
    }
    const int Jyougen = 10000;
    static int[] SosuuArr;
    //エラトステネスの篩
    static void Eratosthenes()
    {
        var CheckArr = new bool[Jyougen + 1];
        for (int I = 2; I <= CheckArr.GetUpperBound(0); I++) {
            CheckArr[I] = true;
        }
        for (int I = 2; I <= CheckArr.GetUpperBound(0); I++) {
            if (I != 2 && I % 2 == 0) continue;
            if (CheckArr[I]) {
                for (int J = I * 2; J <= CheckArr.GetUpperBound(0); J += I) {
                    CheckArr[J] = false;
                }
            }
        }
        var SosuuList = new List<int>();
        for (int I = 2; I <= CheckArr.GetUpperBound(0); I++)
            if (CheckArr[I]) SosuuList.Add(I);
        SosuuArr = SosuuList.ToArray();
    }
    //素因数分解した素因数の配列を返す
    static int[] DeriveSoinsuuArr(int pTarget)
    {
        if (Array.BinarySearch<int>(SosuuArr, pTarget) >= 0) {
            return new int[] { pTarget };
        }
        var SoinsuuList = new List<int>();
        for (int I = 0; I <= SosuuArr.GetUpperBound(0); I++) {
            while (pTarget % SosuuArr[I] == 0) {
                SoinsuuList.Add(SosuuArr[I]);
                pTarget /= SosuuArr[I];
            }
            if (pTarget == 1) break;
        }
        return SoinsuuList.ToArray();
    }
}
 
 
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