結果
| 問題 |
No.2510 Six Cube Sum Counting
|
| コンテスト | |
| ユーザー |
crimsontea
|
| 提出日時 | 2023-10-20 22:58:23 |
| 言語 | C# (.NET 8.0.404) |
| 結果 |
AC
|
| 実行時間 | 1,557 ms / 4,000 ms |
| コード長 | 3,975 bytes |
| コンパイル時間 | 16,964 ms |
| コンパイル使用メモリ | 167,960 KB |
| 実行使用メモリ | 261,620 KB |
| 最終ジャッジ日時 | 2024-09-20 21:23:17 |
| 合計ジャッジ時間 | 57,906 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 26 |
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 (134 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
#nullable enable
using System;
using System.Linq;
using System.Collections;
using System.IO;
using System.Collections.Generic;
using System.Text;
using System.Numerics;
using System.Runtime.Intrinsics.X86;
using System.Buffers;
using System.Diagnostics;
using System.Runtime.CompilerServices;
using static InputUtility;
using System.Reflection;
class Program
{
static void Main()
{
InputNewLine();
var x = NextInt32;
Stopwatch sw = Stopwatch.StartNew();
var abc = Abc();
static (int v, int c)[] Abc()
{
Span<int> n3 = stackalloc int[301];
for (int i = 0; i < n3.Length; i++)
{
n3[i] = i * i * i;
}
(int v, int c)[] abc = new (int v, int c)[4590551];
int index = 0;
for (int a = 0; a < n3.Length; a++)
{
for (int b = a; b < n3.Length; b++)
{
for (int c = b; c < n3.Length; c++)
{
abc[index++] = (n3[a] + n3[b] + n3[c], c);
}
}
}
return abc;
}
Array.Sort(abc);
var def = Def();
static (int v, int d)[] Def()
{
Span<int> n3 = stackalloc int[301];
for (int i = 0; i < n3.Length; i++)
{
n3[i] = i * i * i;
}
(int v, int c)[] abc = new (int v, int c)[4590551];
int index = 0;
for (int a = 0; a < n3.Length; a++)
{
for (int b = a; b < n3.Length; b++)
{
for (int c = b; c < n3.Length; c++)
{
abc[index++] = (n3[a] + n3[b] + n3[c], a);
}
}
}
return abc;
}
Array.Sort(def);
int res = 0;
int right = def.Length - 1;
foreach (var (v, c) in abc)
{
var target = x - v;
if (target < 0) { break; }
while (right >= 0 && target < def[right].v)
{
right--;
}
for (int i = right; i >= 0; i--)
{
if (target != def[i].v)
{
break;
}
if (c <= def[i].d)
{
res++;
}
else
{
break;
}
}
}
Console.WriteLine(res);
}
}
public static class InputUtility
{
private static string[]? s_inputs;
private static string? s_raw;
private static int s_index = 0;
private static void Init() => s_index = 0;
public static int NextInt32 => int.Parse(s_inputs![s_index++]!);
public static uint NextUInt32 => uint.Parse(s_inputs![s_index++]!);
public static long NextInt64 => long.Parse(s_inputs![s_index++]!);
public static string NextString => s_inputs![s_index++];
public static char NextChar => s_inputs![s_index++][0];
public static int[] GetInt32Array() => s_inputs!.Select(int.Parse).ToArray();
public static long[] GetInt64Array() => s_inputs!.Select(long.Parse).ToArray();
public static string GetRawString() => s_raw!;
#if DEBUG
private static TextReader? s_textReader;
public static void SetSource(string path) => s_textReader = new StringReader(File.ReadAllText(path));
#endif
public static bool InputNewLine()
{
#if DEBUG
if (s_textReader is TextReader sr)
{
Init();
s_raw = sr.ReadLine()!;
s_inputs = s_raw.Split(' ', StringSplitOptions.RemoveEmptyEntries);
return true;
}
#endif
Init();
s_raw = Console.ReadLine()!;
s_inputs = s_raw.Split(' ', StringSplitOptions.RemoveEmptyEntries);
return true;
}
}
crimsontea