結果
問題 | No.776 A Simple RMQ Problem |
ユーザー |
![]() |
提出日時 | 2019-09-21 03:22:34 |
言語 | C#(csc) (csc 3.9.0) |
結果 |
AC
|
実行時間 | 2,359 ms / 3,000 ms |
コード長 | 9,649 bytes |
コンパイル時間 | 1,375 ms |
コンパイル使用メモリ | 114,560 KB |
実行使用メモリ | 65,336 KB |
最終ジャッジ日時 | 2024-09-15 11:16:10 |
合計ジャッジ時間 | 41,485 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 26 |
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.Linq;using System.IO;using static System.Console;using static System.Convert;using static System.Math;//using static System.Globalization.CultureInfo;using System.Text;class Program{public static bool chmin<T>(ref T num, T val) where T : IComparable<T>{ if (num.CompareTo(val) == 1) { num = val; return true; } return false; }public static bool chmax<T>(ref T num, T val) where T : IComparable<T>{ if (num.CompareTo(val) == -1) { num = val; return true; } return false; }public static void swap<T>(ref T v1, ref T v2){ var t = v2; v2 = v1; v1 = t; }public static void Fail() { WriteLine("No"); Console.Out.Close(); Environment.Exit(0); }static void Main(string[] args){var sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };Console.SetOut(sw);var p = new Program();for (var i = 1; i > 0; --i)p.Solve();Console.Out.Flush();}SegmentTree<long[]> seg;void Solve(){int num, q;Input.Make(out num, out q);seg = new SegmentTree<long[]>(num, new[] { 0, long.MinValue / 3, long.MinValue / 3, long.MinValue / 3 }, (a, b) => new[] { a[0] + b[0], Max(a[1], a[0] + b[1]), Max(b[2], a[2] + b[0]), new[] {a[3],b[3],a[2]+b[1] }.Max() });for (var i = 0; i < num; i++)seg[i] = Enumerable.Repeat(Input.Next<long>(), 4).ToArray();seg.All_Update();while (q-- > 0){var s = Input.Next<string>();if (s == "set"){int i;long x;Input.Make(out i, out x);seg.Update(i - 1, new[] { x, x, x, x });continue;}int l1, l2, r1, r2;Input.Make(out l1, out l2, out r1, out r2);l1--;r1--;chmax(ref r1, l1);chmin(ref l2, r2);if (l2 < r1){WriteLine(calc(l1, l2, r1, r2));continue;}var m = Max(calc(l1, l2, l2, r2), calc(l1, r1, r1, r2));var a = seg.Query(r1, l2);WriteLine(Max(m, a[3]));}}long calc(int l1, int l2, int r1, int r2){var a = seg.Query(l1, l2);var b = l2 != r1 ? seg.Query(l2, r1)[0] : 0;var c = seg.Query(r1, r2);return a[2] + b + c[1];}}public class SegmentTree<T>{protected readonly T[] item;protected readonly int num;protected readonly Func<T, T, T> func;protected readonly Func<T, T, T> updateFunc;protected readonly T init;protected int Parent(int index)=> (index - 1) >> 1;protected int Left(int index)=> (index << 1) + 1;protected int Right(int index)=> (index + 1) << 1;public T this[int i]{get { return item[i + num - 1]; }set { item[i + num - 1] = value; }}public SegmentTree(int num, T init, Func<T, T, T> func, Func<T, T, T> updateFunc = null){this.func = func;this.num = 1;this.init = init;this.updateFunc = updateFunc ?? ((T val1, T val2) => val2);while (this.num <= num)this.num *= 2;item = new T[2 * this.num - 1];for (var i = 0; i < 2 * this.num - 1; i++)item[i] = init;}public void Update(int index, T value){index += num - 1;item[index] = updateFunc(item[index], value);while (index > 0){index = Parent(index);item[index] = func(item[Left(index)], item[Right(index)]);}}public virtual void Update(int left, int right, T value)=> Update(left, right, 0, 0, num, value);protected virtual void Update(int left, int right, int k, int l, int r, T value){if (r <= left || right <= l) return;if (left <= l && r <= right) item[k] = updateFunc(item[k], value);else{Update(left, right, Left(k), l, (l + r) >> 1, value);Update(left, right, Right(k), (l + r) >> 1, r, value);}}public void All_Update(){for (int i = num - 2; i >= 0; i--)item[i] = func(item[Left(i)], item[Right(i)]);}public T Query(int index){index += num - 1;var value = func(init, item[index]);while (index > 0){index = Parent(index);value = func(value, item[index]);}return value;}//[left,right)public virtual T Query(int left, int right)=> Query(left, right, 0, 0, num);protected virtual T Query(int left, int right, int k, int l, int r){if (r <= left || right <= l) return init;if (left <= l && r <= right) return item[k];elsereturn func(Query(left, right, Left(k), l, (l + r) >> 1), Query(left, right, Right(k), (l + r) >> 1, r));}}public class Input{public static string read => ReadLine().Trim();public static int[] ar => read.Split(' ').Select(int.Parse).ToArray();public static int num => ToInt32(read);public static long[] arL => read.Split(' ').Select(long.Parse).ToArray();public static long numL => ToInt64(read);public static T[] create<T>(int n, Func<int, T> f)=> Enumerable.Repeat(0, n).Select(f).ToArray();public static char[][] grid(int h)=> create(h, _ => read.ToCharArray());public static int[] ar1D(int n)=> create(n, _ => num);public static long[] arL1D(int n)=> create(n, _ => numL);public static string[] strs(int n)=> create(n, _ => read);public static int[][] ar2D(int n)=> create(n, _ => ar);public static long[][] arL2D(int n)=> create(n, _ => arL);public static List<T>[] edge<T>(int n)=> create(n, _ => new List<T>());public static T GetValue<T>(string g){var t = typeof(T);if (t == typeof(int))return (T)(object)int.Parse(g);if (t == typeof(long))return (T)(object)long.Parse(g);if (t == typeof(string))return (T)(object)g;if (t == typeof(char))return (T)(object)char.Parse(g);if (t == typeof(double))return (T)(object)double.Parse(g);if (t == typeof(bool))return (T)(object)bool.Parse(g);return default(T);}public static void Make<T1, T2>(out T1 v1, out T2 v2){v1 = Next<T1>();v2 = Next<T2>();}public static void Make<T1, T2, T3>(out T1 v1, out T2 v2, out T3 v3){Make(out v1, out v2);v3 = Next<T3>();}public static void Make<T1, T2, T3, T4>(out T1 v1, out T2 v2, out T3 v3, out T4 v4){Make(out v1, out v2, out v3);v4 = Next<T4>();}public static void Make<T1, T2, T3, T4, T5>(out T1 v1, out T2 v2, out T3 v3, out T4 v4, out T5 v5){Make(out v1, out v2, out v3, out v4);v5 = Next<T5>();}public static void Make<T1, T2, T3, T4, T5, T6>(out T1 v1, out T2 v2, out T3 v3, out T4 v4, out T5 v5, out T6 v6){Make(out v1, out v2, out v3, out v4, out v5);v6 = Next<T6>();}private static Queue<string> sc;public static T Next<T>() { sc = sc ?? new Queue<string>(); if (sc.Count == 0) foreach (var item in read.Split(' ')) sc.Enqueue(item); returnGetValue<T>(sc.Dequeue()); }public static void Next<T>(ref T val) => val = Next<T>();public const long Inf = (long)1e18;public const double eps = 1e-6;public const string Alfa = "abcdefghijklmnopqrstuvwxyz";public const int MOD = 1000000007;}public class Pair<T1, T2> : IComparable<Pair<T1, T2>>{public T1 v1 { get; set; }public T2 v2 { get; set; }public Pair() { v1 = Input.Next<T1>(); v2 = Input.Next<T2>(); }public Pair(T1 v1, T2 v2){ this.v1 = v1; this.v2 = v2; }public int CompareTo(Pair<T1, T2> p){var c = Comparer<T1>.Default.Compare(v1, p.v1);if (c == 0)c = Comparer<T2>.Default.Compare(v2, p.v2);return c;}public override string ToString()=> $"{v1.ToString()} {v2.ToString()}";public override bool Equals(object obj)=> this == (Pair<T1, T2>)obj;public override int GetHashCode()=> v1.GetHashCode() ^ v2.GetHashCode();public static bool operator ==(Pair<T1, T2> p1, Pair<T1, T2> p2)=> p1.CompareTo(p2) == 0;public static bool operator !=(Pair<T1, T2> p1, Pair<T1, T2> p2)=> p1.CompareTo(p2) != 0;public static bool operator >(Pair<T1, T2> p1, Pair<T1, T2> p2)=> p1.CompareTo(p2) == 1;public static bool operator >=(Pair<T1, T2> p1, Pair<T1, T2> p2)=> p1.CompareTo(p2) != -1;public static bool operator <(Pair<T1, T2> p1, Pair<T1, T2> p2)=> p1.CompareTo(p2) == -1;public static bool operator <=(Pair<T1, T2> p1, Pair<T1, T2> p2)=> p1.CompareTo(p2) != 1;}public class Pair<T1, T2, T3> : Pair<T1, T2>, IComparable<Pair<T1, T2, T3>>{public T3 v3 { get; set; }public Pair() : base() { v3 = Input.Next<T3>(); }public Pair(T1 v1, T2 v2, T3 v3) : base(v1, v2){ this.v3 = v3; }public int CompareTo(Pair<T1, T2, T3> p){var c = base.CompareTo(p);if (c == 0)c = Comparer<T3>.Default.Compare(v3, p.v3);return c;}public override string ToString()=> $"{base.ToString()} {v3.ToString()}";}