結果

問題 No.2890 Chiffon
ユーザー KumaTachiRenKumaTachiRen
提出日時 2024-09-13 22:05:17
言語 C#
(.NET 8.0.203)
結果
AC  
実行時間 861 ms / 2,000 ms
コード長 6,961 bytes
コンパイル時間 8,190 ms
コンパイル使用メモリ 167,968 KB
実行使用メモリ 333,948 KB
最終ジャッジ日時 2024-09-26 14:41:01
合計ジャッジ時間 30,960 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge3
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 41 ms
23,424 KB
testcase_01 AC 40 ms
23,168 KB
testcase_02 AC 41 ms
23,168 KB
testcase_03 AC 42 ms
24,192 KB
testcase_04 AC 39 ms
23,412 KB
testcase_05 AC 41 ms
24,064 KB
testcase_06 AC 39 ms
23,296 KB
testcase_07 AC 40 ms
23,284 KB
testcase_08 AC 756 ms
156,284 KB
testcase_09 AC 39 ms
23,296 KB
testcase_10 AC 39 ms
23,680 KB
testcase_11 AC 43 ms
24,448 KB
testcase_12 AC 40 ms
23,424 KB
testcase_13 AC 44 ms
24,320 KB
testcase_14 AC 41 ms
23,552 KB
testcase_15 AC 41 ms
23,552 KB
testcase_16 AC 41 ms
23,412 KB
testcase_17 AC 40 ms
23,296 KB
testcase_18 AC 40 ms
23,156 KB
testcase_19 AC 39 ms
23,296 KB
testcase_20 AC 40 ms
23,424 KB
testcase_21 AC 39 ms
23,424 KB
testcase_22 AC 39 ms
23,168 KB
testcase_23 AC 669 ms
174,980 KB
testcase_24 AC 447 ms
107,720 KB
testcase_25 AC 307 ms
86,528 KB
testcase_26 AC 668 ms
140,372 KB
testcase_27 AC 717 ms
151,220 KB
testcase_28 AC 65 ms
29,696 KB
testcase_29 AC 98 ms
37,632 KB
testcase_30 AC 414 ms
94,992 KB
testcase_31 AC 845 ms
160,468 KB
testcase_32 AC 649 ms
139,968 KB
testcase_33 AC 73 ms
32,256 KB
testcase_34 AC 751 ms
179,312 KB
testcase_35 AC 650 ms
179,316 KB
testcase_36 AC 709 ms
179,200 KB
testcase_37 AC 665 ms
179,188 KB
testcase_38 AC 687 ms
179,328 KB
testcase_39 AC 691 ms
179,200 KB
testcase_40 AC 729 ms
179,328 KB
testcase_41 AC 661 ms
179,072 KB
testcase_42 AC 662 ms
179,456 KB
testcase_43 AC 730 ms
179,456 KB
testcase_44 AC 676 ms
179,184 KB
testcase_45 AC 673 ms
179,188 KB
testcase_46 AC 657 ms
179,328 KB
testcase_47 AC 674 ms
179,328 KB
testcase_48 AC 670 ms
179,200 KB
testcase_49 AC 673 ms
179,456 KB
testcase_50 AC 684 ms
179,072 KB
testcase_51 AC 685 ms
179,328 KB
testcase_52 AC 697 ms
179,444 KB
testcase_53 AC 683 ms
179,328 KB
testcase_54 AC 769 ms
161,424 KB
testcase_55 AC 861 ms
333,948 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
  復元対象のプロジェクトを決定しています...
  /home/judge/data/code/main.csproj を復元しました (97 ms)。
MSBuild のバージョン 17.9.6+a4ecab324 (.NET)
  main -> /home/judge/data/code/bin/Release/net8.0/main.dll
  main -> /home/judge/data/code/bin/Release/net8.0/publish/

ソースコード

diff # 

using Lib;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.CompilerServices;
using System.Text;
using static Lib.OutputLib;
public class Solver
{
    const bool MultiTestCase = false;
    void Solve()
    {
        int n = ri, k = ri;
        ReadArray(out int[] a, k);

        var b = new int[2 * k];
        for (int i = 0; i < k; i++) b[i] = a[i];
        for (int i = 0; i < k; i++) b[i + k] = a[i] + 2 * n;

        const int LOG = 20;
        var dp = new int[LOG][];
        for (int i = 0; i < LOG; i++) dp[i] = new int[2 * n + 1];

        int ok = 0, ng = n + 1;
        while (ng - ok > 1)
        {
            int x = (ok + ng) / 2;
            for (int i = 0; i < LOG; i++) Array.Fill(dp[i], -1);

            for (int i = 1, j = 0; i <= n * 2; i++)
            {
                while (j + 1 < 2 * k && b[j + 1] <= 2 * i) j++;
                int p = Math.Min((b[j] - 1) / 2, i - x);
                if (p < 0) continue;
                if (j > 0 && p * 2 < b[j - 1]) continue;
                dp[0][i] = p;
                for (int l = 0; l + 1 < LOG && dp[l][i] != -1; l++) dp[l + 1][i] = dp[l][dp[l][i]];
            }

            var f = new int[n * 2 + 1];
            for (int i = 0; i <= n * 2; i++) f[i] = i;
            for (int l = 0; l < LOG; l++)
            {
                if (((k >> l) & 1) == 0) continue;
                for (int i = 0; i < f.Length; i++)
                    if (f[i] != -1) f[i] = dp[l][f[i]];
            }
            bool flg = false;
            for (int i = n; i <= n * 2; i++) flg |= i - n <= f[i];
            if (flg) ok = x; else ng = x;
        }
        Write(ok * 2);
    }

#pragma warning disable CS0162
    public Solver() { if (!MultiTestCase) Solve(); else for (int t = ri; t > 0; t--) Solve(); }
#pragma warning restore CS0162

    const int IINF = 1 << 30;
    const long INF = 1L << 60;
    int ri { [MethodImpl(256)] get => (int)sc.Integer(); }
    long rl { [MethodImpl(256)] get => sc.Integer(); }
    uint rui { [MethodImpl(256)] get => (uint)sc.UInteger(); }
    ulong rul { [MethodImpl(256)] get => sc.UInteger(); }
    double rd { [MethodImpl(256)] get => sc.Double(); }
    string rs { [MethodImpl(256)] get => sc.Scan(); }
    string rline { [MethodImpl(256)] get => sc.Line(); }
    public StreamScanner sc = new StreamScanner(Console.OpenStandardInput());
    void ReadArray(out int[] a, int n) { a = new int[n]; for (int i = 0; i < a.Length; i++) a[i] = ri; }
    void ReadArray(out long[] a, int n) { a = new long[n]; for (int i = 0; i < a.Length; i++) a[i] = rl; }
    void ReadArray<T>(out T[] a, int n, Func<T> read) { a = new T[n]; for (int i = 0; i < a.Length; i++) a[i] = read(); }
    void ReadArray<T>(out T[] a, int n, Func<int, T> read) { a = new T[n]; for (int i = 0; i < a.Length; i++) a[i] = read(i); }
}

static class Program
{
    static public void Main(string[] args)
    {
        SourceExpander.Expander.Expand();
        Console.SetOut(new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false });
        new Solver();
        Console.Out.Flush();
    }
}
#region Expanded by https://github.com/kzrnm/SourceExpander
namespace Lib{public partial class StreamScanner{public int[][]ReadUnweightedTree(int n,int origin=1){var gr=new List<int>[n];for(int i=0;i<n;i++)gr[i]=new List<int>();for(int i=0;i<n-1;i++){int u=(int)(Integer()-origin);int v=(int)(Integer()-origin);gr[u].Add(v);gr[v].Add(u);}var g=new int[n][];for(int i=0;i<n;i++)g[i]=gr[i].ToArray();return g;}}}
namespace Lib{public partial class StreamScanner{public StreamScanner(Stream stream){str=stream;}private readonly Stream str;private readonly byte[]buf=new byte[1024];private int len,ptr;public bool isEof=false;public bool IsEndOfStream{get{return isEof;}}[MethodImpl(256)]private byte Read(){if(isEof)throw new EndOfStreamException();if(ptr>=len){ptr=0;if((len=str.Read(buf,0,1024))<=0){isEof=true;return 0;}}return buf[ptr++];}[MethodImpl(256)]public char Char(){byte b=0;do b=Read();while(b<33||126<b);return(char)b;}[MethodImpl(256)]public string Line(){var sb=new StringBuilder();for(var b=Char();b!=10&&!isEof;b=(char)Read())sb.Append(b);return sb.ToString();}[MethodImpl(256)]public string Scan(){var sb=new StringBuilder();for(var b=Char();b>=33&&b<=126;b=(char)Read())sb.Append(b);return sb.ToString();}[MethodImpl(256)]public long Integer(){long ret=0;byte b=0;var ng=false;do b=Read();while(b!='-'&&(b<'0'||'9'<b));if(b=='-'){ng=true;b=Read();}for(;true;b=Read()){if(b<'0'||'9'<b)return ng?-ret:ret;else ret=ret*10+b-'0';}}[MethodImpl(256)]public ulong UInteger(){ulong ret=0;byte b=0;do b=Read();while(b<'0'||'9'<b);for(;true;b=Read()){if(b<'0'||'9'<b)return ret;else ret=ret*10+b-'0';}}[MethodImpl(256)]public double Double()=>double.Parse(Scan());}}
namespace Lib{public static class OutputLib{[MethodImpl(256)]public static void WriteJoin<T>(string s,IEnumerable<T>t)=>Console.WriteLine(string.Join(s,t));[MethodImpl(256)]public static void WriteMat<T>(T[,]a,string sep=" "){int sz1=a.GetLength(0),sz2=a.GetLength(1);var b=new T[sz2];for(int i=0;i<sz1;i++){for(int j=0;j<sz2;j++)b[j]=a[i,j];WriteJoin(sep,b);}}[MethodImpl(256)]public static void WriteMat<T>(T[][]a,string sep=" "){for(int i=0;i<a.Length;i++)WriteJoin(sep,a[i]);}[MethodImpl(256)]public static void WriteMat<T>(T[][]a,Func<T,string>map,string sep=" "){for(int i=0;i<a.Length;i++)WriteJoin(sep,a[i].Select(x=>map(x)));}[MethodImpl(256)]public static void Write(object t)=>Console.WriteLine(t.ToString());[MethodImpl(256)]public static void Write(params object[]arg)=>Console.WriteLine(string.Join(" ",arg.Select(x=>x.ToString())));[MethodImpl(256)]public static void Write(string str)=>Console.WriteLine(str);[MethodImpl(256)]public static void WriteFlush(object t){Console.WriteLine(t.ToString());Console.Out.Flush();}[MethodImpl(256)]public static void WriteError(object t)=>Console.Error.WriteLine(t.ToString());[MethodImpl(256)]public static void Flush()=>Console.Out.Flush();[MethodImpl(256)]public static void YN(bool t)=>Console.WriteLine(t?"YES":"NO");[MethodImpl(256)]public static void Yn(bool t)=>Console.WriteLine(t?"Yes":"No");[MethodImpl(256)]public static void yn(bool t)=>Console.WriteLine(t?"yes":"no");[MethodImpl(256)]public static void DeleteLine()=>Console.Write("\x1b[1A\x1b[2K");[MethodImpl(256)]public static void ProgressBar(long now,long total,int blocks=50){int x=(int)((2*now*blocks+1)/(2*total));Console.Write($"\x1b[G[\x1b[42m{string.Concat(Enumerable.Repeat("_",x))}\x1b[0m{string.Concat(Enumerable.Repeat("_",blocks-x))}] : {now} / {total}");}}}
namespace SourceExpander{public class Expander{[Conditional("EXP")]public static void Expand(string inputFilePath=null,string outputFilePath=null,bool ignoreAnyError=true){}public static string ExpandString(string inputFilePath=null,bool ignoreAnyError=true){return "";}}}
#endregion Expanded by https://github.com/kzrnm/SourceExpander
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