結果
問題 | No.59 鉄道の旅 |
ユーザー |
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提出日時 | 2015-03-10 15:13:49 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 99 ms / 5,000 ms |
コード長 | 3,054 bytes |
コンパイル時間 | 2,386 ms |
コンパイル使用メモリ | 109,184 KB |
実行使用メモリ | 26,496 KB |
最終ジャッジ日時 | 2024-12-24 20:33:37 |
合計ジャッジ時間 | 3,964 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 4 |
other | AC * 12 |
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
using System;using System.IO;using System.Linq;using System.Text;using System.Diagnostics;using System.Collections.Generic;using System.Text.RegularExpressions;using Enu = System.Linq.Enumerable;class Program{static readonly int MaxW = 1000000;void Solve(){int N = reader.Int(), K = reader.Int();var W = reader.IntArray(N);var bit = new BinaryIndexedTree(MaxW);foreach (int w in W){if (w < 0){if (bit.Sum(-w, -w + 1) > 0) bit.Add(-w, -1);}else{if (bit.Sum(w, MaxW + 1) < K) bit.Add(w, 1);}}Console.WriteLine(bit.Sum(MaxW));}class BinaryIndexedTree{private readonly int N;private readonly int[] A;public BinaryIndexedTree(int N){this.N = N + 1;A = new int[N + 2];}public void Add(int i, int val){for (++i; i <= N; i += i & -i) A[i] += val;}public void Update(int i, int val){Add(i, val - (Sum(i) - Sum(i - 1)));}public int Sum(int i){int sum = 0;for (++i; i > 0; i &= i - 1) sum += A[i];return sum;}public int Sum(int L, int R) // [L, R){return Sum(R - 1) - Sum(L - 1);}}Reader reader = new Reader(Console.In);static void Main() { new Program().Solve(); }}class Reader{private readonly TextReader reader;private readonly char[] separator = { ' ' };private readonly StringSplitOptions removeOp = StringSplitOptions.RemoveEmptyEntries;private string[] A = new string[0];private int i;public Reader(TextReader r) { reader = r; }public Reader(string file) { reader = new StreamReader(file); }public bool HasNext() { return Enqueue(); }public string String() { return Dequeue(); }public int Int() { return int.Parse(Dequeue()); }public long Long() { return long.Parse(Dequeue()); }public double Double() { return double.Parse(Dequeue()); }public int[] IntLine() { var s = Line(); return s == "" ? new int[0] : Array.ConvertAll(Split(s), int.Parse); }public int[] IntArray(int N) { return Enu.Range(0, N).Select(i => Int()).ToArray(); }public int[][] IntGrid(int H) { return Enu.Range(0, H).Select(i => IntLine()).ToArray(); }public string[] StringArray(int N) { return Enu.Range(0, N).Select(i => Line()).ToArray(); }public string Line() { return reader.ReadLine().Trim(); }private string[] Split(string s) { return s.Split(separator, removeOp); }private bool Enqueue(){if (i < A.Length) return true;string line = reader.ReadLine();if (line == null) return false;if (line == "") return Enqueue();A = Split(line);i = 0;return true;}private string Dequeue() { Enqueue(); return A[i++]; }}