結果

問題 No.67 よくある棒を切る問題 (1)
ユーザー yambe2002yambe2002
提出日時 2018-09-28 04:48:17
言語 C#(csc)
(csc 3.9.0)
結果
WA  
実行時間 -
コード長 5,876 bytes
コンパイル時間 1,231 ms
コンパイル使用メモリ 111,744 KB
実行使用メモリ 44,672 KB
最終ジャッジ日時 2024-10-12 04:44:57
合計ジャッジ時間 10,374 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge4
このコードへのチャレンジ
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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 193 ms
44,672 KB
testcase_01 WA -
testcase_02 WA -
testcase_03 WA -
testcase_04 WA -
testcase_05 WA -
testcase_06 AC 284 ms
37,888 KB
testcase_07 WA -
testcase_08 WA -
testcase_09 AC 302 ms
40,832 KB
testcase_10 WA -
testcase_11 WA -
testcase_12 AC 251 ms
36,608 KB
testcase_13 WA -
testcase_14 WA -
testcase_15 AC 263 ms
39,296 KB
testcase_16 AC 280 ms
37,888 KB
testcase_17 AC 279 ms
37,888 KB
testcase_18 AC 272 ms
37,888 KB
testcase_19 AC 299 ms
40,832 KB
testcase_20 AC 283 ms
40,704 KB
testcase_21 AC 258 ms
40,832 KB
testcase_22 AC 226 ms
37,120 KB
testcase_23 AC 241 ms
37,504 KB
testcase_24 AC 31 ms
20,096 KB
testcase_25 WA -
testcase_26 WA -
testcase_27 AC 38 ms
20,480 KB
testcase_28 WA -
testcase_29 WA -
testcase_30 WA -
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;
using System.Threading.Tasks;
using System.IO;
using System.Numerics;


#if DEBUG
using Microsoft.VisualStudio.TestTools.UnitTesting;
#endif

namespace competitive_programming
{
    public class Program
    {
        static void Main(string[] args)
        {
#if DEBUG
            var scanner = new IO.StreamScanner(File.Open("input.txt", FileMode.Open));
#else
            var scanner = new IO.StreamScanner(Console.OpenStandardInput());
#endif

            var n = scanner.Integer();
            var l = scanner.ScanLine().Split().Select(c => double.Parse(c)).ToList();
            var k = scanner.Integer();
            IO.Printer.Out.WriteLine(GetAns(n, l, k));

            IO.Printer.Out.Flush();
        }

        static double GetAns(int n, List<double> l, int k)
        {
            var left = 0.0;
            var right = l.Max();

            for (int i = 0; i < 100; i++)
            {
                var mid = (left + right) / 2;
                if (Possible(l, k, mid))
                    left = mid;
                else
                    right = mid;
            }

            return left;
        }

        static bool Possible(List<double> l, int k, double length)
        {
            var cnt = 0;
            foreach(var stick in l)
            {
                cnt += (int)(stick / length);
                if (cnt >= k) return true;
            }
            return false;
        }
    }

#if DEBUG
#endif

    namespace IO
    {
        using System.IO;
        using System.Text;
        using System.Globalization;

        public class Printer : StreamWriter
        {
            static Printer()
            {
                Out = new Printer(Console.OpenStandardOutput()) { AutoFlush = false };
            }

            public static Printer Out { get; set; }

            public override IFormatProvider FormatProvider
            {
                get { return CultureInfo.InvariantCulture; }
            }

            public Printer(Stream stream)
                : base(stream, new UTF8Encoding(false, true))
            {
            }

            public Printer(Stream stream, Encoding encoding)
                : base(stream, encoding)
            {
            }

            public void Write<T>(string format, T[] source)
            {
                base.Write(format, source.OfType<object>().ToArray());
            }

            public void WriteLine<T>(string format, T[] source)
            {
                base.WriteLine(format, source.OfType<object>().ToArray());
            }
        }

        public class StreamScanner
        {
            public StreamScanner(Stream stream)
            {
                str = stream;
            }

            public readonly Stream str;
            private readonly byte[] buf = new byte[1024];
            private int len, ptr;
            public bool isEof;

            public bool IsEndOfStream
            {
                get { return isEof; }
            }

            private byte read()
            {
                if (isEof) return 0;
                if (ptr < len) return buf[ptr++];
                ptr = 0;
                if ((len = str.Read(buf, 0, 1024)) > 0) return buf[ptr++];
                isEof = true;
                return 0;
            }

            public char Char()
            {
                byte b;
                do b = read(); while ((b < 33 || 126 < b) && !isEof);
                return (char)b;
            }

            public string Scan()
            {
                var sb = new StringBuilder();
                for (var b = Char(); b >= 33 && b <= 126; b = (char)read())
                    sb.Append(b);
                return sb.ToString();
            }

            public string ScanLine()
            {
                var sb = new StringBuilder();
                for (var b = Char(); b != '\n'; b = (char)read())
                    if (b == 0) break;
                    else if (b != '\r') sb.Append(b);
                return sb.ToString();
            }

            public long Long()
            {
                if (isEof) return long.MinValue;
                long ret = 0;
                byte b;
                var ng = false;
                do b = read(); while (b != 0 && b != '-' && (b < '0' || '9' < b));
                if (b == 0) return long.MinValue;
                if (b == '-')
                {
                    ng = true;
                    b = read();
                }
                for (; ; b = read())
                {
                    if (b < '0' || '9' < b)
                        return ng ? -ret : ret;
                    ret = ret * 10 + b - '0';
                }
            }

            public int Integer()
            {
                return (isEof) ? int.MinValue : (int)Long();
            }

            public double Double()
            {
                var s = Scan();
                return s != "" ? double.Parse(s, CultureInfo.InvariantCulture) : double.NaN;
            }

            static T[] enumerate<T>(int n, Func<T> f)
            {
                var a = new T[n];
                for (int i = 0; i < n; ++i) a[i] = f();
                return a;
            }

            public char[] Char(int n)
            {
                return enumerate(n, Char);
            }

            public string[] Scan(int n)
            {
                return enumerate(n, Scan);
            }

            public double[] Double(int n)
            {
                return enumerate(n, Double);
            }

            public int[] Integer(int n)
            {
                return enumerate(n, Integer);
            }

            public long[] Long(int n)
            {
                return enumerate(n, Long);
            }
        }
    }
}
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