結果
| 問題 |
No.3013 ハチマキ買い星人
|
| ユーザー |
|
| 提出日時 | 2025-01-25 12:55:59 |
| 言語 | C# (.NET 8.0.404) |
| 結果 |
TLE
|
| 実行時間 | - |
| コード長 | 2,923 bytes |
| コンパイル時間 | 15,745 ms |
| コンパイル使用メモリ | 170,584 KB |
| 実行使用メモリ | 180,684 KB |
| 最終ジャッジ日時 | 2025-01-25 22:28:29 |
| 合計ジャッジ時間 | 106,214 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge6 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 16 TLE * 29 |
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 (114 ミリ秒)。 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.Numerics;
object? Solve()
{
var n = Int();
var m = Int();
var p = Int();
var y = long.Parse(String());
var adjl = n.Repeat(() => new List<(int, long)>());
for (var i = 0; i < m; i++)
{
var u = Int() - 1;
var v = Int() - 1;
var c = Int();
adjl[u].Add((v, c));
adjl[v].Add((u, c));
}
var shops = new int[n].AsSpan();
shops.Fill(int.MaxValue);
for (var i = 0; i < p; i++) shops[Int() - 1] = Int();
bool F(long x, Span<int> shops)
{
if (y / x >= shops[0]) return true;
var q = new PriorityQueue<(int v, long yl), long>();
var byz = new long[n];
q.Enqueue((0, y), -y);
byz[0] = y;
while (q.Count > 0)
{
var (v, yl) = q.Dequeue();
if (yl < byz[v]) continue;
var adjz = adjl[v];
foreach (var (next, c) in adjz)
{
var ny = Math.Max(yl - c, 0);
if (ny / x >= shops[next]) return true;
if (byz[next] < ny)
{
byz[next] = ny;
q.Enqueue((next, ny), -ny);
}
}
}
return false;
}
var pass = 0L;
var fail = y + 1;
while (Math.Abs(pass - fail) > 1)
{
var middle = (pass + fail) >> 1;
if (F(middle, shops)) pass = middle; else fail = middle;
}
return pass;
}
#region
AtCoderIO _io_;
var _backend_ = new StandardIOBackend();
_io_ = new(){ Backend = _backend_ };
Out(Solve());
_backend_.Flush();
string String() => _io_.Next();
int Int() => int.Parse(String());
void Out(object? x, string? sep = null) => _io_.Out(x, sep ?? Environment.NewLine);
class AtCoderIO
{
public required StandardIOBackend Backend { get; init; }
Memory<string> _input = Array.Empty<string>();
int _iter = 0;
public string Next()
{
while (_iter >= _input.Length) (_input, _iter) = (Backend.ReadLine().Trim().Split(' '), 0);
return _input.Span[_iter++];
}
public void Out(object? x, string separator)
{
if (x == null) return;
if (x is System.Collections.IEnumerable a and not string)
{
var objects = a.Cast<object>();
if (!objects.Any()) return;
x = string.Join(separator, objects);
}
Backend.WriteLine(x);
}
}
class StandardIOBackend
{
readonly StreamReader _sr = new(Console.OpenStandardInput());
readonly StreamWriter _sw = new(Console.OpenStandardOutput()) { AutoFlush = false };
public string ReadLine() => _sr.ReadLine()!;
public void WriteLine(object? value) => _sw.WriteLine(value);
public void Flush() => _sw.Flush();
}
#endregion
static class Extensions
{
public static T[] Repeat<T>(this int time, Func<T> F) => Enumerable.Range(0, time).Select(_ => F()).ToArray();
}