結果

問題 No.136 Yet Another GCD Problem
ユーザー sekiya9311sekiya9311
提出日時 2017-10-15 15:53:19
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 65 ms / 5,000 ms
コード長 6,163 bytes
コンパイル時間 2,309 ms
コンパイル使用メモリ 108,016 KB
実行使用メモリ 22,940 KB
最終ジャッジ日時 2023-08-11 04:35:16
合計ジャッジ時間 6,943 ms
ジャッジサーバーID
（参考情報） 		judge14 / judge13
このコードへのチャレンジ（β）

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 58 ms
22,844 KB
testcase_01 AC 56 ms
20,748 KB
testcase_02 AC 58 ms
22,776 KB
testcase_03 AC 63 ms
20,916 KB
testcase_04 AC 65 ms
20,696 KB
testcase_05 AC 61 ms
20,772 KB
testcase_06 AC 58 ms
20,964 KB
testcase_07 AC 60 ms
18,768 KB
testcase_08 AC 61 ms
22,776 KB
testcase_09 AC 58 ms
18,824 KB
testcase_10 AC 61 ms
20,796 KB
testcase_11 AC 63 ms
20,728 KB
testcase_12 AC 59 ms
20,760 KB
testcase_13 AC 62 ms
20,752 KB
testcase_14 AC 64 ms
22,840 KB
testcase_15 AC 64 ms
20,892 KB
testcase_16 AC 62 ms
22,940 KB
testcase_17 AC 62 ms
20,804 KB
testcase_18 AC 59 ms
20,916 KB
testcase_19 AC 63 ms
20,688 KB
testcase_20 AC 61 ms
18,792 KB
testcase_21 AC 58 ms
20,740 KB
testcase_22 AC 59 ms
22,800 KB
testcase_23 AC 59 ms
22,708 KB
testcase_24 AC 57 ms
20,800 KB
testcase_25 AC 58 ms
22,824 KB
testcase_26 AC 58 ms
20,760 KB
testcase_27 AC 65 ms
20,784 KB
testcase_28 AC 63 ms
20,788 KB
testcase_29 AC 60 ms
22,820 KB
testcase_30 AC 61 ms
20,968 KB
testcase_31 AC 60 ms
20,708 KB
testcase_32 AC 58 ms
22,908 KB
testcase_33 AC 57 ms
22,820 KB
testcase_34 AC 61 ms
22,864 KB
testcase_35 AC 63 ms
20,804 KB
testcase_36 AC 60 ms
22,832 KB
testcase_37 AC 63 ms
20,768 KB
testcase_38 AC 57 ms
20,660 KB
testcase_39 AC 57 ms
22,752 KB
testcase_40 AC 57 ms
20,912 KB
testcase_41 AC 57 ms
20,724 KB
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.Linq;
using System.Text;

namespace ProgrammingContest
{
    class MainClass : IDisposable
    {
        Scanner sc;
        Writer wr;
        string backPath = "..";
        char dirSep = System.IO.Path.DirectorySeparatorChar;
        string inFilePath = null;
        string outFilePath = null;
        public MainClass()
        {
            this.inFilePath = this.backPath
                            + this.dirSep
                            + this.backPath
                            + this.dirSep
                            + "in.txt";
            this.outFilePath = this.backPath
                             + this.dirSep
                             + this.backPath
                             + this.dirSep
                             + "out.txt";
        }
        static void Main(string[] args)
        {
            using (var mainClass = new MainClass())
            {
                //mainClass.MakeTestCase();
                mainClass.Solve();
            }
        }

        public void Dispose()
        {
            if (this.sc != null)
            {
                this.sc.Dispose();
                this.sc = null;
            }
            if (this.wr != null)
            {
                this.wr.Dispose();
                this.wr = null;
            }
        }

        void MakeTestCase()
        {
            Random rand = new Random();
            var res = new StringBuilder();



            using (var writer = new System.IO.StreamWriter(inFilePath))
                writer.Write(res.ToString());
        }

        void Solve()
        {
            this.wr = new Writer(this.isReactive);
            //this.wr = new Writer(this.outFilePath);
#if DEBUG
            if (!this.isReactive)
                this.sc = new Scanner(this.inFilePath);
            else
                this.sc = new Scanner();
#else
            this.sc = new Scanner();
#endif

            int N = sc.NextInt;
            int K = sc.NextInt;
            int ans = 1;
            for (int i = 2; i <= N / 2; i++)
            {
                ans = Math.Max(ans, (int)Gcd(i, N - i));
            }
            wr.WriteLine(ans);
        }

        long Gcd(long a, long b)
        {
            if (a < b)
            {
                long tmp = b;
                b = a;
                a = tmp;
            }
            long ret = 1;
            while (b != 0)
            {
                ret = b;
                b = a % b;
                a = ret;
            }
            return ret;
        }

        bool isReactive = false; // TODO: reactive check !!
    }

    class Writer : IDisposable
    {
        System.IO.TextWriter writer;
        StringBuilder sb;
        bool isReactive;
        public Writer(string path) : this(new System.IO.StreamWriter(path))
        {
        }
        public Writer(bool isReactive) : this(null, isReactive)
        {
        }
        public Writer(System.IO.TextWriter writer = null, bool isReactive = false)
        {
            this.writer = (writer ?? Console.Out);
            if (!(this.isReactive = isReactive))
            {
                this.sb = new StringBuilder();
            }
        }
        public void Dispose()
        {
            if (!isReactive)
                this.writer.Write(sb.ToString());
            if (!this.writer.Equals(Console.Out))
                this.writer.Dispose();
        }
        public void Write(object val)
        {
            if (this.isReactive)
            {
                this.writer.Write(val.ToString());
                this.writer.Flush();
            }
            else
                this.sb.Append(val.ToString());
        }
        public void Write(string format, params object[] vals)
        {
            if (this.isReactive)
            {
                this.writer.Write(format, vals);
                this.writer.Flush();
            }
            else
                this.sb.AppendFormat(format, vals);
        }
        public void WriteLine(object val)
        {
            this.Write(val.ToString() + System.Environment.NewLine);
        }
        public void WriteLine(string format, params object[] vals)
        {
            this.Write(format + System.Environment.NewLine, vals);
        }
    }

    class Scanner : IDisposable
    {
        Queue<string> buffer;
        char[] sep;
        System.IO.TextReader reader;
        public Scanner(string path) : this(new System.IO.StreamReader(path))
        {
        }
        public Scanner(System.IO.TextReader reader = null)
        {
            this.buffer = new Queue<string>();
            this.sep = new char[] { ' ' };
            this.reader = (reader ?? Console.In);
        }
        private void CheckBuffer()
        {
            if (this.buffer.Count == 0)
            {
                string str = null;
                while (string.IsNullOrEmpty(str))
                {
                    str = this.reader.ReadLine();
                }
                string[] strArray = str.Split(this.sep);
                foreach (string elStr in strArray)
                {
                    this.buffer.Enqueue(elStr);
                }
            }
        }

        public void Dispose()
        {
            if (!this.reader.Equals(Console.In))
                this.reader.Dispose();
        }

        public string Next
        {
            get
            {
                this.CheckBuffer();
                return this.buffer.Dequeue();
            }
        }

        public int NextInt
        {
            get
            {
                return int.Parse(this.Next);
            }
        }
        public double NextDouble
        {
            get
            {
                return double.Parse(this.Next);
            }
        }

        public long NextLong
        {
            get
            {
                return long.Parse(this.Next);
            }
        }
        public bool IsEmpty
        {
            get
            {
                this.CheckBuffer();
                return this.buffer.Count == 0;
            }
        }
    }
}
0