結果
| 問題 | 
                            No.246 質問と回答
                             | 
                    
| コンテスト | |
| ユーザー | 
                             | 
                    
| 提出日時 | 2015-07-18 14:49:37 | 
| 言語 | C#(csc)  (csc 3.9.0)  | 
                    
| 結果 | 
                             
                                WA
                                 
                             
                            
                         | 
                    
| 実行時間 | - | 
| コード長 | 3,322 bytes | 
| コンパイル時間 | 4,145 ms | 
| コンパイル使用メモリ | 113,948 KB | 
| 実行使用メモリ | 36,120 KB | 
| 平均クエリ数 | 31.70 | 
| 最終ジャッジ日時 | 2024-07-16 07:13:21 | 
| 合計ジャッジ時間 | 4,959 ms | 
| 
                            ジャッジサーバーID (参考情報)  | 
                        judge5 / judge3 | 
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| ファイルパターン | 結果 | 
|---|---|
| other | AC * 14 WA * 16 | 
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;
class Program
{
    static void Main()
    {
        long answer = 500000000;
        long nowRange = answer / 2;
        long qCount = 100;
        while (nowRange > 0)
        {
            LIB.IO.W("? " + answer.ToString());
            LIB.IO.WFLUSH();
            if (LIB.IO.R<int>() == 1)
            {
                answer += nowRange;
            }
            else
            {
                answer -= nowRange;
            }
            nowRange >>= 1;
            qCount--;
        }
        int direction = 0;
        bool first = false;
        for (int i = 0; i < qCount / 2; i++)
        {
            LIB.IO.W("? " + answer.ToString());
            LIB.IO.WFLUSH();
            int nowDirection = LIB.IO.R<int>();
            if (first == false)
            {
                first = true;
                direction = nowDirection;
            }
            if (nowDirection == 1)
            {
                answer++;
            }
            else
            {
                answer--;
            }
            if (nowDirection != direction) { break; }
        }
        LIB.IO.W("! " + answer.ToString());
        LIB.IO.WFLUSH();
    }
}
namespace LIB
{
    public class IO
    {
        private const int WMAX = 1000;
        private static string WSTRING = "";
        public static T R<T>()
        {
            return (T)(Convert.ChangeType(R(), typeof(T)));
        }
        public static T[] R<T>(char splitter = ' ')
        {
            return R().Split(splitter).Select(v => UTILITY.PARSE<T>(v)).ToArray();
        }
        public static T[] R<T>(int length)
        {
            T[] ret = new T[length];
            for (int i = 0; i < length; i++)
            {
                ret[i] = R<T>();
            }
            return ret;
        }
        public static T[][] R<T>(int length, char splitter = ' ')
        {
            T[][] ret = new T[length][];
            for (int i = 0; i < length; i++)
            {
                ret[i] = R<T>(splitter);
            }
            return ret;
        }
        private static string R()
        {
            return Console.ReadLine();
        }
        public static void W(object value, bool addLineFeed = true)
        {
            WSTRING += UTILITY.PARSE<string>(value);
            if (addLineFeed == true) { WSTRING += "\n"; }
            if (WSTRING.Count() >= WMAX) { WFLUSH(); }
        }
        public static void WFLUSH()
        {
            Console.Write(WSTRING);
            WSTRING = "";
        }
    }
    public class UTILITY
    {
        public static T PARSE<T>(object value)
        {
            return (T)(Convert.ChangeType(value, typeof(T)));
        }
    }
    public class MEMO<Key, Result>
    {
        private Dictionary<Key, Result> results;
        public MEMO()
        {
            results = new Dictionary<Key, Result>();
        }
        public Result EXEC(Key key, Func<Key, Result> func)
        {
            Result ret = default(Result);
            if (results.ContainsKey(key))
            {
                ret = results[key];
            }
            else
            {
                ret = func(key);
                results.Add(key, ret);
            }
            return ret;
        }
    }
}