#474516 (C#(csc)) No.1041 直線大学

• 問題: No.1041 直線大学
• ユーザー: 紙ぺーぱー
• 提出日時: 2020-05-01 22:16:23
• 言語: C#(csc) (csc 3.9.0)
• 結果: AC
• 実行時間: 33 ms / 2,000 ms
• コード長: 3,845 bytes
• コンパイル時間: 2,689 ms
• コンパイル使用メモリ: 111,872 KB
• 実行使用メモリ: 18,688 KB
• 最終ジャッジ日時: 2024-11-16 07:55:56
• 合計ジャッジ時間: 4,705 ms
• ジャッジサーバーID （参考情報）: judge5 / judge3

入力	結果	実行時間; 実行使用メモリ
testcase_00	AC	26 ms; 18,688 KB
testcase_01	AC	26 ms; 18,688 KB
testcase_02	AC	26 ms; 18,560 KB
testcase_03	AC	26 ms; 18,560 KB
testcase_04	AC	26 ms; 18,432 KB
testcase_05	AC	27 ms; 18,560 KB
testcase_06	AC	27 ms; 18,560 KB
testcase_07	AC	26 ms; 18,560 KB
testcase_08	AC	26 ms; 18,560 KB
testcase_09	AC	26 ms; 18,432 KB
testcase_10	AC	30 ms; 18,688 KB
testcase_11	AC	30 ms; 18,432 KB
testcase_12	AC	32 ms; 18,432 KB
testcase_13	AC	27 ms; 18,432 KB
testcase_14	AC	29 ms; 18,688 KB
testcase_15	AC	26 ms; 18,432 KB
testcase_16	AC	28 ms; 18,560 KB
testcase_17	AC	26 ms; 18,560 KB
testcase_18	AC	27 ms; 18,560 KB
testcase_19	AC	29 ms; 18,560 KB
testcase_20	AC	26 ms; 18,560 KB
testcase_21	AC	28 ms; 18,432 KB
testcase_22	AC	27 ms; 18,560 KB
testcase_23	AC	31 ms; 18,432 KB
testcase_24	AC	28 ms; 18,560 KB
testcase_25	AC	28 ms; 18,560 KB
testcase_26	AC	27 ms; 18,560 KB
testcase_27	AC	27 ms; 18,304 KB
testcase_28	AC	26 ms; 18,432 KB
testcase_29	AC	26 ms; 18,432 KB
testcase_30	AC	27 ms; 18,560 KB
testcase_31	AC	27 ms; 18,560 KB
testcase_32	AC	27 ms; 18,560 KB
testcase_33	AC	26 ms; 18,560 KB
testcase_34	AC	26 ms; 18,432 KB
testcase_35	AC	26 ms; 18,560 KB
testcase_36	AC	26 ms; 18,432 KB
testcase_37	AC	26 ms; 18,688 KB
testcase_38	AC	33 ms; 18,560 KB
testcase_39	AC	26 ms; 18,432 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.Linq;
using System.Collections.Generic;
using Debug = System.Diagnostics.Trace;
using SB = System.Text.StringBuilder;
using static System.Math;
using static System.Numerics.BigInteger;
using static Program.IO.Scanner;

using Number = System.Int64;
#region IO
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)) { }
	}
	static public class Scanner {
		public static StreamScanner sc = new StreamScanner(Console.OpenStandardInput());
		public static int ri => sc.Integer();
		public static long rl => sc.Long();
		public static string rs => sc.Scan();
		public static double rd => sc.Double();
	}
	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

#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, 50000000);
		t.Start();
		t.Join();
		//*/
		//solver.Solve();
		Console.Out.Flush();
	}
}
#endregion

namespace Program {
	public class Solver {
		Random rnd = new Random(0);
		public void Solve() {
			var n = ri;
			var P = Enumerate(n, x => new int[] { ri, ri });
			var ans = 0;
			for (int i = 0; i < n; i++)
				for (int j = 0; j < n; j++) {
					var dx = P[j][0] - P[i][0];
					var dy = P[j][1] - P[i][1];
					var cnt = 0;
					if (dx != 0 && dy != 0)
						for (int k = 0; k < n; k++) {
							var ddx = P[k][0] - P[i][0];
							var ddy = P[k][1] - P[i][1];
							if (dy * ddx == ddy * dx) cnt++;
						}
					else if (dx == 0) {
						for (int k = 0; k < n; k++) if (P[k][0] == P[i][0]) cnt++;
					}
					else for (int k = 0; k < n; k++) if (P[k][1] == P[i][1]) cnt++;
					ans = Max(ans, cnt);
				}
			Console.WriteLine(ans);
		}

		const long INF = 1L << 60;
		static int[] dx = { -1, 0, 1, 0 };
		static int[] dy = { 0, 1, 0, -1 };
		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; }
	}
}