#153066 (C#(csc)) No.488 四角関係

• 問題: No.488 四角関係
• ユーザー: mban
• 提出日時: 2017-02-26 02:33:19
• 言語: C#(csc) (csc 3.9.0)
• 結果: CE (最新)
  AC
  (最初)
• 実行時間: -
• コード長: 4,347 bytes
• コンパイル時間: 27 ms
• 最終ジャッジ日時: 2026-03-04 21:45:19
• 合計ジャッジ時間: 319 ms
• ジャッジサーバーID （参考情報）: judge2 / judge1

コンパイルメッセージ

85dc86ec519c
[/j_bin/judge_tool judge 40000 ../CompileMemory.txt /dev/null sud /dev/null _ csc -langversion:latest -unsafe -warn:0 -o+ /r:System.Numerics.dll Main.cs -out:a.exe]
strconv.Atoi: parsing "../CompileMemory.txt": invalid syntax
goroutine 1 [running]:
runtime/debug.Stack()
	/home/yuki2006/go/pkg/mod/golang.org/[e-mail]-amd64/src/runtime/debug/stack.go:26 +0x5e
main.main.func1()
	/home/yuki2006/gopath/src/yukicoder/judge/main.go:22 +0x57
panic({0x7d6880?, 0xc0000f6240?})
	/home/yuki2006/go/pkg/mod/golang.org/[e-mail]-amd64/src/runtime/panic.go:783 +0x132
main.judgeMain({0xc000012130, 0x5?, 0x0?})
	/home/yuki2006/gopath/src/yukicoder/judge/judge_linux.go:121 +0x4b1
main.main()
	/home/yuki2006/gopath/src/yukicoder/judge/main.go:97 +0x277

ソースコード

using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Text;
using System.Text.RegularExpressions;
using System.Linq;
using System.IO;

class Program
{
    static void Main(string[] args)
    {
        new Magatro().Solve();
    }
}

public class Scanner
{
    private StreamReader Sr;

    private string[] S;
    private int Index;
    private const char Separator = ' ';

    public Scanner(Stream source)
    {
        Index = 0;
        S = new string[0];
        Sr = new StreamReader(source);
    }

    private string[] Line()
    {
        return Sr.ReadLine().Split(Separator);
    }

    public string Next()
    {
        string result;
        if (Index >= S.Length)
        {
            S = Line();
            Index = 0;
        }
        result = S[Index];
        Index++;
        return result;
    }
    public int NextInt()
    {
        return int.Parse(Next());
    }
    public double NextDouble()
    {
        return double.Parse(Next());
    }
    public long NextLong()
    {
        return long.Parse(Next());
    }
    public decimal NextDecimal()
    {
        return decimal.Parse(Next());
    }
    public string[] StringArray(int index = 0)
    {
        Next();
        Index = S.Length;
        return S.Skip(index).ToArray();
    }
    public int[] IntArray(int index = 0)
    {
        return StringArray(index).Select(int.Parse).ToArray();
    }
    public long[] LongArray(int index = 0)
    {
        return StringArray(index).Select(long.Parse).ToArray();
    }
    public bool EndOfStream
    {
        get { return Sr.EndOfStream; }
    }
}

public class Magatro
{
    private Scanner Cin;
    private int N, M;
    private int[] a, b;
    private List<int>[] L;
    private void Scan()
    {
        Cin = new Scanner(Console.OpenStandardInput());
        N = Cin.NextInt();
        M = Cin.NextInt();
        a = new int[M];
        b = new int[M];
        for (int i = 0; i < M; i++)
        {
            a[i] = Cin.NextInt();
            b[i] = Cin.NextInt();
        }
    }

    public void Solve()
    {
        Scan();
        L = new List<int>[N];
        for (int i = 0; i < N; i++)
        {
            L[i] = new List<int>();
        }
        for (int i = 0; i < M; i++)
        {
            L[a[i]].Add(b[i]);
            L[b[i]].Add(a[i]);
        }
        int counter = 0;
        for (int i = 0; i < N - 3; i++)
        {
            for (int j = i + 1; j < N - 2; j++)
            {
                for (int k = j + 1; k < N - 1; k++)
                {
                    for (int l = k + 1; l < N; l++)
                    {
                        if (IsShikaku(i, j, k, l))
                        {
                            //Console.WriteLine($"{i} {j} {k} {l}");
                            counter++;
                        }
                    }
                }
            }
        }
        Console.WriteLine(counter);
    }

    private bool IsShikaku(int a, int b, int c, int d)
    {
        bool bb, cc, dd;
        bb = L[a].Contains(b);
        cc = L[a].Contains(c);
        dd = L[a].Contains(d);
        if (IsSankaku(a, b, c)) return false;
        if (IsSankaku(a, b, d)) return false;
        if (IsSankaku(a, c, d)) return false;
        if (IsSankaku(b, c, d)) return false;


        //Console.WriteLine($"{a} {b}{bb} {c}{cc} {d}{dd}");
        if (bb)
        {
            if (cc)
            {
                if (!L[b].Contains(c))
                {
                    if (L[d].Contains(b) && L[d].Contains(c)) return true;
                }
            }
            if (dd)
            {
                if (!L[b].Contains(d))
                {
                    if (L[c].Contains(b) && L[c].Contains(d)) return true;
                }
            }
        }
        if (cc)
        {
            if (dd)
            {
                if (!L[c].Contains(d))
                {
                    if (L[b].Contains(c) && L[b].Contains(d)) return true;
                }
            }
        }
        return false;
    }

    private bool IsSankaku(int a,int b,int c)
    {
        if (L[a].Contains(b))
        {
            if (L[a].Contains(c))
            {
                if (L[b].Contains(c)) return true;
            }
        }
        return false;
    }
}