Submission #3389566

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Source Code Expand

using System;
using System.Linq;//リストの使用
using System.Collections.Generic;
class Program
{
	static void Main()
	{
		string[] input = Console.ReadLine().Split(' ');//Splitで区切り文字を指定して複数個受け取る。
		long n = long.Parse(input[0]);
		long k = long.Parse(input[1]);
    long[,] vertexes = new long[n,2];
    long[,] masses = new long[4*k,4*k];
    long answer = 0;
    for(long i = 0; i < n; i++)
    {
      var nums = Console.ReadLine().Split(' ');//１行ごとに受け取る
      vertexes[i,0] = long.Parse(nums[0]);
      vertexes[i,1] = long.Parse(nums[1]);
      vertexes[i,0] %= 2 * k;
      vertexes[i,1] %= 2 * k;
      if(nums[2] == "W")
      {
        if(vertexes[i,0] < k) vertexes[i,0] += k;//WをBに反転
        else vertexes[i,0] -= k;
        if(vertexes[i,1] < k) vertexes[i,1] += k;
        else vertexes[i,1] -= k;
      }
      masses[vertexes[i,0], vertexes[i,1]]++;
      masses[vertexes[i,0]+k, vertexes[i,1]]--;
      masses[vertexes[i,0], vertexes[i,1]+k]--;
      masses[vertexes[i,0]+k, vertexes[i,1]+k] += 2;
      masses[vertexes[i,0]+k, vertexes[i,1]+2*k]--;
      masses[vertexes[i,0]+2*k, vertexes[i,1]+k]--;
      masses[vertexes[i,0]+2*k, vertexes[i,1]+2*k]++;
    }

    for(long i = 1; i < 4*k; i++)//右側へたす
    {
      for(long j = 0; j < 4*k; j++)
      {
        masses[i,j] += masses[i-1,j];
      }
    }

    for(long j = 1; j < 4*k; j++)//上側へたす
    {
      for(long i = 0; i < 4*k; i++)
      {
        masses[i,j] += masses[i,j-1];
      }
    }

    for(long i = 0; i < 4*k; i++)
    {
      for(long j = 0; j < 4*k; j++)
      {
        answer = Math.Max(answer, masses[i,j]);
      }
    }
    
		Console.WriteLine(answer);
	}
}

Submission Info

Judge Result