Submission #3369596

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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 a = long.Parse(input[0]);
		long b = long.Parse(input[1]);
		long[] numsL = Array.ConvertAll(Console.ReadLine().Split(' '),long.Parse);
    long[] numsR = Array.ConvertAll(Console.ReadLine().Split(' '),long.Parse);
		long[][] dp = new long[a+1][];//左からll個、右からrr個取った時の、先手の最高得点。[a,b]=0
    for(long i = 0; i <= a; i++)
    {
      dp[i] = new long[b+1];
    }
    
    for(long ll = a; ll>= 0; ll--)
    {
      for(long rr = b; rr >= 0; rr--)
      {
        if(ll == a && rr == b) continue;
        if((ll + rr) % 2 == 0)//先手の番
        {
          if(ll == a) dp[ll][rr] = dp[ll][rr+1];
          else if(rr == b) dp[ll][rr] = dp[ll+1][rr];
          else dp[ll][rr] = Math.Max(dp[ll+1][rr] + numsL[ll], dp[ll][rr+1]+numsR[rr]);
          //Console.WriteLine(ll+" "+rr+" "+dp[ll][rr]);
        }else//後手の番
        {
          if(ll == a) dp[ll][rr] = dp[ll][rr+1];
          else if(rr == b) dp[ll][rr] = dp[ll+1][rr];
          else dp[ll][rr] = Math.Min(dp[ll+1][rr], dp[ll][rr+1]);
          //Console.WriteLine(ll+" "+rr+" "+dp[ll][rr]);
        }    
      }
    }

		Console.WriteLine(dp[0][0]);
	}
}

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