#480811 (C#(csc)) No.1041 直線大学

提出ソース

結果

問題	No.1041 直線大学
ユーザー	mnzn
提出日時	2020-05-12 18:32:32
言語	C#(csc) (csc 3.9.0)
結果	AC
実行時間	45 ms / 2,000 ms
コード長	5,378 bytes
コンパイル時間	877 ms
コンパイル使用メモリ	114,404 KB
実行使用メモリ	18,176 KB
最終ジャッジ日時	2024-04-28 00:15:45
合計ジャッジ時間	2,960 ms
ジャッジサーバーID （参考情報）	judge1 / judge4

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	20 ms 18,048 KB
testcase_01	AC	21 ms 18,176 KB
testcase_02	AC	20 ms 17,664 KB
testcase_03	AC	20 ms 18,048 KB
testcase_04	AC	20 ms 18,048 KB
testcase_05	AC	20 ms 18,048 KB
testcase_06	AC	20 ms 17,792 KB
testcase_07	AC	20 ms 17,792 KB
testcase_08	AC	21 ms 17,920 KB
testcase_09	AC	20 ms 18,176 KB
testcase_10	AC	40 ms 17,920 KB
testcase_11	AC	38 ms 17,792 KB
testcase_12	AC	38 ms 17,920 KB
testcase_13	AC	21 ms 18,048 KB
testcase_14	AC	31 ms 18,176 KB
testcase_15	AC	23 ms 17,920 KB
testcase_16	AC	28 ms 17,664 KB
testcase_17	AC	19 ms 18,048 KB
testcase_18	AC	23 ms 18,176 KB
testcase_19	AC	28 ms 17,920 KB
testcase_20	AC	18 ms 17,920 KB
testcase_21	AC	23 ms 18,176 KB
testcase_22	AC	20 ms 18,176 KB
testcase_23	AC	41 ms 18,176 KB
testcase_24	AC	31 ms 18,048 KB
testcase_25	AC	24 ms 17,792 KB
testcase_26	AC	20 ms 18,048 KB
testcase_27	AC	21 ms 18,048 KB
testcase_28	AC	19 ms 18,176 KB
testcase_29	AC	19 ms 17,792 KB
testcase_30	AC	19 ms 18,048 KB
testcase_31	AC	19 ms 18,048 KB
testcase_32	AC	19 ms 17,920 KB
testcase_33	AC	18 ms 17,920 KB
testcase_34	AC	19 ms 17,920 KB
testcase_35	AC	20 ms 17,920 KB
testcase_36	AC	18 ms 17,792 KB
testcase_37	AC	20 ms 18,048 KB
testcase_38	AC	45 ms 17,792 KB
testcase_39	AC	21 ms 17,920 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

raw source code

using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        var sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
        Console.SetOut(sw);
        Solve();
        Console.Out.Flush();
    }
    static void Solve()
    {
        var N = sc.ReadInt();
        var X = new int[N];
        var Y = new int[N];
        for (int i = 0; i < N; i++)
        {
            X[i] = sc.ReadInt();
            Y[i] = sc.ReadInt();
        }
        var ans = 0;
        for (int i = 0; i < N; i++)
        {
            for (int j = 0; j < N; j++)
            {
                var count = 0;
                for (int k = 0; k < N; k++)
                {
                    var d = Distance(X[k], Y[k], X[i], Y[i], X[j], Y[j]);
                    if (d == 0) count++;
                }
                ans = Math.Max(ans, count);
            }
        }
        Console.WriteLine(ans);
    }
    // 点(x0, y0)と2点(x1, y1)(x2, y2)を通る直線の距離を返す
    static double Distance(double x0, double y0, double x1, double y1, double x2, double y2)
    {
        var a = x2 - x1;
        var b = y2 - y1;
        var a2 = a * a;
        var b2 = b * b;
        var r2 = a2 + b2;
        var tt = -(a * (x1 - x0) + b * (y1 - y0));
        if (tt < 0)
        {
            return (x1 - x0) * (x1 - x0) + (y1 - y0) * (y1 - y0);
        }
        //if (tt > r2)
        //{
        //    return (x2 - x0) * (x2 - x0) + (y2 - y0) * (y2 - y0);
        //}
        var f1 = a * (y1 - y0) - b * (x1 - x0);
        return Math.Sqrt((f1 * f1) / r2);
    }
    static Scanner sc = new Scanner();
}
class Scanner
{
    string[] S = new string[0];
    int Index = 0;
    char[] Separators = new char[] { ' ' };

    public string Next()
    {
        if (this.Index < this.S.Length) return this.S[this.Index++];
        var line = "";
        while (line == "") line = Console.ReadLine();
        this.S = line.Split(this.Separators, StringSplitOptions.RemoveEmptyEntries);
        if (this.S.Length == 0) return this.Next();
        this.Index = 0;
        return this.S[this.Index++];
    }
    public string ReadStr()
    {
        return this.Next();
    }
    public char ReadChar()
    {
        return this.Next()[0];
    }
    public int ReadInt()
    {
        return int.Parse(this.Next());
    }
    public uint ReadUInt()
    {
        return uint.Parse(this.Next());
    }
    public long ReadLong()
    {
        return long.Parse(this.Next());
    }
    public double ReadDouble()
    {
        return double.Parse(this.Next());
    }
    public Tuple<int, int> ReadTup(int add = 0)
    {
        return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add);
    }
    public Tuple<long, long> ReadTupLong(int add = 0)
    {
        return Tuple.Create(this.ReadLong() + add, this.ReadLong() + add);
    }
    public Tuple<int, int, int> ReadTup3(int add = 0)
    {
        return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add);
    }
    public Tuple<int, int, int, int> ReadTup4(int add = 0)
    {
        return Tuple.Create(this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add, this.ReadInt() + add);
    }
    public int[] ReadIntArray(int n)
    {
        var array = new int[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadInt();
        }
        return array;
    }
    public long[] ReadLongArray(int n)
    {
        var array = new long[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadLong();
        }
        return array;
    }
    public double[] ReadDoubleArray(int n)
    {
        var array = new double[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadDouble();
        }
        return array;
    }
    public char[] ReadCharArray(int n)
    {
        var array = new char[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadChar();
        }
        return array;
    }
    public string[] ReadStrArray(int n)
    {
        var array = new string[n];
        for (int i = 0; i < array.Length; i++)
        {
            array[i] = this.ReadStr();
        }
        return array;
    }
    public Tuple<long, long>[] ReadTupLongArray(int n, int add = 0)
    {
        var array = new Tuple<long, long>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTupLong(add);
        }
        return array;
    }
    public Tuple<int, int>[] ReadTupArray(int n, int add = 0)
    {
        var array = new Tuple<int, int>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTup(add);
        }
        return array;
    }
    public Tuple<int, int, int>[] ReadTup3Array(int n, int add = 0)
    {
        var array = new Tuple<int, int, int>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTup3(add);
        }
        return array;
    }
    public Tuple<int, int, int, int>[] ReadTup4Array(int n, int add = 0)
    {
        var array = new Tuple<int, int, int, int>[n];
        for (int i = 0; i < n; i++)
        {
            array[i] = this.ReadTup4(add);
        }
        return array;
    }
}

yukicoder

結果

テストケース

コンパイルメッセージ

ソースコード