結果

問題 No.1031 いたずら好きなお姉ちゃん
ユーザー 紙ぺーぱー紙ぺーぱー
提出日時 2020-04-17 21:56:05
言語 C#(csc)
(csc 3.9.0)
結果
AC  
実行時間 149 ms / 3,500 ms
コード長 3,837 bytes
コンパイル時間 2,455 ms
コンパイル使用メモリ 118,056 KB
実行使用メモリ 36,204 KB
最終ジャッジ日時 2024-04-14 14:06:50
合計ジャッジ時間 9,578 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge2
このコードへのチャレンジ
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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 31 ms
27,980 KB
testcase_01 AC 31 ms
25,800 KB
testcase_02 AC 31 ms
27,824 KB
testcase_03 AC 37 ms
27,752 KB
testcase_04 AC 36 ms
28,244 KB
testcase_05 AC 36 ms
28,116 KB
testcase_06 AC 35 ms
29,900 KB
testcase_07 AC 36 ms
29,108 KB
testcase_08 AC 36 ms
29,908 KB
testcase_09 AC 36 ms
27,844 KB
testcase_10 AC 37 ms
29,904 KB
testcase_11 AC 123 ms
33,684 KB
testcase_12 AC 123 ms
32,028 KB
testcase_13 AC 142 ms
32,088 KB
testcase_14 AC 127 ms
33,828 KB
testcase_15 AC 135 ms
34,120 KB
testcase_16 AC 121 ms
33,812 KB
testcase_17 AC 136 ms
35,908 KB
testcase_18 AC 130 ms
32,060 KB
testcase_19 AC 138 ms
34,012 KB
testcase_20 AC 143 ms
34,012 KB
testcase_21 AC 132 ms
31,820 KB
testcase_22 AC 121 ms
33,936 KB
testcase_23 AC 126 ms
31,792 KB
testcase_24 AC 138 ms
36,052 KB
testcase_25 AC 141 ms
34,020 KB
testcase_26 AC 133 ms
32,208 KB
testcase_27 AC 127 ms
33,980 KB
testcase_28 AC 143 ms
31,844 KB
testcase_29 AC 144 ms
34,028 KB
testcase_30 AC 143 ms
31,848 KB
testcase_31 AC 142 ms
31,864 KB
testcase_32 AC 142 ms
31,596 KB
testcase_33 AC 142 ms
31,716 KB
testcase_34 AC 127 ms
36,056 KB
testcase_35 AC 143 ms
34,784 KB
testcase_36 AC 141 ms
32,496 KB
testcase_37 AC 146 ms
34,788 KB
testcase_38 AC 149 ms
34,388 KB
testcase_39 AC 141 ms
34,520 KB
testcase_40 AC 145 ms
34,516 KB
testcase_41 AC 144 ms
32,748 KB
testcase_42 AC 142 ms
34,640 KB
testcase_43 AC 143 ms
34,152 KB
testcase_44 AC 142 ms
33,888 KB
testcase_45 AC 137 ms
30,160 KB
testcase_46 AC 149 ms
35,416 KB
testcase_47 AC 141 ms
35,552 KB
testcase_48 AC 140 ms
35,432 KB
testcase_49 AC 148 ms
35,304 KB
testcase_50 AC 149 ms
35,424 KB
testcase_51 AC 141 ms
36,204 KB
testcase_52 AC 138 ms
33,892 KB
testcase_53 AC 137 ms
34,276 KB
testcase_54 AC 29 ms
25,760 KB
testcase_55 AC 31 ms
26,932 KB
権限があれば一括ダウンロードができます
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

diff # 

using System;
using System.Linq;
using System.Collections.Generic;
using System.Diagnostics;
using Debug = System.Diagnostics.Trace;
using SB = System.Text.StringBuilder;
using static System.Math;

using Number = System.Int64;
using static System.Numerics.BigInteger;
namespace Program {
	public class Solver {
		Random rnd = new Random(0);
		public void Solve() {
			var n = ri;
			var a = Enumerate(n, x => ri);
			var ans = 0L;
			ans += f(n, a);
			Array.Reverse(a);
			ans += f(n, a);
			Console.WriteLine(ans);

		}
		long f(int n, int[] a) {
			Debug.WriteLine("---");
			Debug.WriteLine(a.AsJoinedString());
			var max = new List<int>();
			var min = new List<int>();
			var ret = 0L;
			for (int i = 0; i < n; i++) {
				while (max.Any() && a[max.Last()] < a[i]) max.RemoveAt(max.Count - 1);
				while (min.Any() && a[min.Last()] > a[i]) min.RemoveAt(min.Count - 1);
				max.Add(i);
				var l = min.Any() ? min.Last() : -1;
				var id = ~max.BinarySearch(l);
				ret += max.Count - 1 - id;
				min.Add(i);
			}
			return ret;
		}
		const long INF = 1L << 60;
		static int[] dx = { -1, 0, 1, 0 };
		static int[] dy = { 0, 1, 0, -1 };
		int ri { get { return sc.Integer(); } }
		long rl { get { return sc.Long(); } }
		double rd { get { return sc.Double(); } }
		string rs { get { return sc.Scan(); } }
		public IO.StreamScanner sc = new IO.StreamScanner(Console.OpenStandardInput());
		static T[] Enumerate<T>(int n, Func<int, T> f) {
			var a = new T[n]; for (int i = 0; i < a.Length; ++i) a[i] = f(i); return a;
		}
		static T[][] Enumerate<T>(int n, int m, Func<int, int, T> f) {
			return Enumerate(n, x => Enumerate(m, y => f(x, y)));
		}
		static public void Swap<T>(ref T a, ref T b) { var tmp = a; a = b; b = tmp; }
	}
}

#region main
static class Ex {
	static public string AsString(this IEnumerable<char> ie) { return new string(ie.ToArray()); }
	static public string AsJoinedString<T>(this IEnumerable<T> ie, string st = " ") {
		return string.Join(st, ie);
	}
	static public void Main() {
		Console.SetOut(new Program.IO.Printer(Console.OpenStandardOutput()) { AutoFlush = false });
		var solver = new Program.Solver();
		var t = new System.Threading.Thread(solver.Solve, 100000000);
		t.Start();
		t.Join();
		//*/
		//solver.Solve();
		Console.Out.Flush();
	}
}
#endregion
#region Ex
namespace Program.IO {
	using System.IO;
	using System.Text;
	using System.Globalization;

	public class Printer : StreamWriter {
		public override IFormatProvider FormatProvider { get { return CultureInfo.InvariantCulture; } }
		public Printer(Stream stream) : base(stream, new UTF8Encoding(false, true)) { }
	}

	public class StreamScanner {
		public StreamScanner(Stream stream) { str = stream; }

		public readonly Stream str;
		private readonly byte[] buf = new byte[1024];
		private int len, ptr;
		public bool isEof = false;
		public bool IsEndOfStream { get { return isEof; } }

		private byte read() {
			if (isEof) return 0;
			if (ptr >= len) {
				ptr = 0;
				if ((len = str.Read(buf, 0, 1024)) <= 0) {
					isEof = true;
					return 0;
				}
			}
			return buf[ptr++];
		}

		public char Char() {
			byte b = 0;
			do b = read(); while ((b < 33 || 126 < b) && !isEof);
			return (char)b;
		}
		public string Scan() {
			var sb = new StringBuilder();
			for (var b = Char(); b >= 33 && b <= 126; b = (char)read()) sb.Append(b);
			return sb.ToString();
		}
		public string ScanLine() {
			var sb = new StringBuilder();
			for (var b = Char(); b != '\n' && b != 0; b = (char)read()) if (b != '\r') sb.Append(b);
			return sb.ToString();
		}
		public long Long() { return isEof ? long.MinValue : long.Parse(Scan()); }
		public int Integer() { return isEof ? int.MinValue : int.Parse(Scan()); }
		public double Double() { return isEof ? double.NaN : double.Parse(Scan(), CultureInfo.InvariantCulture); }
	}
}

#endregion
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