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 04:51:44
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 301 ms / 5,000 ms
コード長 5,877 bytes
コンパイル時間 4,641 ms
コンパイル使用メモリ 118,292 KB
実行使用メモリ 54,620 KB
最終ジャッジ日時 2024-11-08 12:47:21
合計ジャッジ時間 11,901 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge2
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
54,620 KB
testcase_01 AC 33 ms
28,064 KB
testcase_02 AC 137 ms
35,188 KB
testcase_03 AC 231 ms
45,932 KB
testcase_04 AC 281 ms
50,392 KB
testcase_05 AC 282 ms
46,036 KB
testcase_06 AC 282 ms
44,124 KB
testcase_07 AC 300 ms
46,808 KB
testcase_08 AC 301 ms
46,808 KB
testcase_09 AC 301 ms
46,804 KB
testcase_10 AC 257 ms
45,220 KB
testcase_11 AC 271 ms
43,700 KB
testcase_12 AC 251 ms
42,972 KB
testcase_13 AC 280 ms
47,992 KB
testcase_14 AC 289 ms
46,512 KB
testcase_15 AC 263 ms
45,252 KB
testcase_16 AC 282 ms
44,260 KB
testcase_17 AC 284 ms
44,268 KB
testcase_18 AC 272 ms
46,296 KB
testcase_19 AC 299 ms
48,976 KB
testcase_20 AC 284 ms
48,980 KB
testcase_21 AC 259 ms
46,796 KB
testcase_22 AC 228 ms
45,096 KB
testcase_23 AC 240 ms
43,724 KB
testcase_24 AC 33 ms
26,036 KB
testcase_25 AC 43 ms
28,784 KB
testcase_26 AC 40 ms
26,676 KB
testcase_27 AC 39 ms
28,584 KB
testcase_28 AC 81 ms
27,388 KB
testcase_29 AC 59 ms
27,436 KB
testcase_30 AC 44 ms
24,628 KB
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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.Long();
            IO.Printer.Out.WriteLine(GetAns(n, l, k));

            IO.Printer.Out.Flush();
        }

        static double GetAns(int n, List<double> l, long 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, long k, double length)
        {
            var cnt = 0L;
            foreach(var stick in l)
            {
                cnt += (long)(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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