結果
問題 | No.59 鉄道の旅 |
ユーザー | くれちー |
提出日時 | 2017-08-14 02:05:50 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 106 ms / 5,000 ms |
コード長 | 3,776 bytes |
コンパイル時間 | 1,101 ms |
コンパイル使用メモリ | 119,036 KB |
実行使用メモリ | 42,112 KB |
最終ジャッジ日時 | 2024-10-13 09:25:23 |
合計ジャッジ時間 | 2,572 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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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 | 33 ms
26,368 KB |
testcase_01 | AC | 32 ms
26,496 KB |
testcase_02 | AC | 34 ms
26,368 KB |
testcase_03 | AC | 32 ms
26,624 KB |
testcase_04 | AC | 104 ms
40,832 KB |
testcase_05 | AC | 32 ms
26,624 KB |
testcase_06 | AC | 36 ms
27,008 KB |
testcase_07 | AC | 34 ms
26,368 KB |
testcase_08 | AC | 43 ms
29,184 KB |
testcase_09 | AC | 46 ms
29,056 KB |
testcase_10 | AC | 44 ms
29,312 KB |
testcase_11 | AC | 44 ms
28,800 KB |
testcase_12 | AC | 80 ms
38,144 KB |
testcase_13 | AC | 98 ms
42,112 KB |
testcase_14 | AC | 106 ms
41,856 KB |
testcase_15 | AC | 32 ms
26,624 KB |
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.Collections.Generic; using System.IO; using System.Linq; using System.Numerics; using System.Text; using static System.Console; using static System.Convert; using static System.Math; using static Extentions; class IO { int idx; string[] input = In.ReadToEnd().Split(new[] { " ", "\n", "\r" }, StringSplitOptions.RemoveEmptyEntries); T Get<T>(Func<string, T> parser) => parser(input[idx++]); public string S => Get(s => s); public char C => Get(char.Parse); public int I => Get(int.Parse); public long L => Get(long.Parse); public double F => Get(double.Parse); public decimal D => Get(decimal.Parse); public BigInteger B => Get(BigInteger.Parse); T[] Gets<T>(int n, Func<string, T> parser) => input.Skip((idx += n) - n).Take(n).Select(parser).ToArray(); public string[] Ss(int n) => Gets(n, s => s); public char[] Cs(int n) => Gets(n, char.Parse); public int[] Is(int n) => Gets(n, int.Parse); public long[] Ls(int n) => Gets(n, long.Parse); public double[] Fs(int n) => Gets(n, double.Parse); public decimal[] Ds(int n) => Gets(n, decimal.Parse); public BigInteger[] Bs(int n) => Gets(n, BigInteger.Parse); public void Write<T>(params T[] xs) => WriteLine(string.Join(" ", xs)); public void Write(params object[] xs) => WriteLine(string.Join(" ", xs)); } interface IMonoid<T> { T Mempty { get; } T Mappend(T a, T b); } class IntSumMonoid : IMonoid<int> { public int Mempty => 0; public int Mappend(int a, int b) => a + b; } class SegmentTree<T> { T[] tree; public readonly int N; public readonly IMonoid<T> Monoid; // O(N) public SegmentTree(int n, IMonoid<T> monoid) { N = 1; while (N < n) N *= 2; tree = Enumerable.Repeat(monoid.Mempty, N * 2).ToArray(); Monoid = monoid; } // O(N) public SegmentTree(IEnumerable<T> collection, IMonoid<T> monoid) { N = 1; while (N < collection.Count()) N *= 2; tree = new T[N * 2]; for (var i = 0; i < N; i++) tree[i + N] = i < collection.Count() ? collection.ElementAt(i) : monoid.Mempty; for (var i = N - 1; i > 0; i--) tree[i] = monoid.Mappend(tree[i * 2], tree[i * 2 + 1]); Monoid = monoid; } // O(log N) public T this[int i] { get { return tree[i + N]; } set { tree[i += N] = value; for (i >>= 1; i > 0; i >>= 1) tree[i] = Monoid.Mappend(tree[i * 2], tree[i * 2 + 1]); } } // O(log N) public T this[int i, int j] { get { var r = Monoid.Mempty; i += N; j += N + 1; for (; i < j; i >>= 1, j >>= 1) { if ((j & 1) != 0) r = Monoid.Mappend(r, tree[--j]); if ((i & 1) != 0) r = Monoid.Mappend(r, tree[i++]); } return r; } } } static class Extentions { } static class Program { public static void Main() { var sw = new StreamWriter(OpenStandardOutput()) { NewLine = "\n" }; #if DEBUG sw.AutoFlush = true; #else sw.AutoFlush = false; #endif SetOut(sw); Solve(new IO()); Out.Flush(); } static void Solve(IO io) { const int wMax = 1000000; var n = io.I; var k = io.I; var segtree = new SegmentTree<int>(wMax + 1, new IntSumMonoid()); for (var i = 0; i < n; i++) { var w = io.I; if (w > 0 && segtree[w, wMax] < k) segtree[w]++; if (w < 0 && segtree[-w] > 0) segtree[-w]--; } io.Write(segtree[0, wMax]); } }