Submission #3477704

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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()
	{
		long l = long.Parse(Console.ReadLine());
		long answer = 0;

    for(long i = 0; l >= 3*(i+3); i++)
    {
      answer += Math.Min(i+1, l-3*i-8);
      answer %= 1000000007;
    }

    for(long i = 0; l >= 2*i+11; i++)
    {
      answer += Math.Min(i+1, l-2*i-10);
      answer %= 1000000007;
    }

		Console.WriteLine(answer);
	}
}

Submission Info

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