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

public class Yuki781
{
	public static void Main()
	{
		var ab = Console.ReadLine().Split(' ').Select(x => int.Parse(x)).ToList();
		var cnt = new long[ab[1] + 1];
		var r = (int)Math.Sqrt(ab[1]);
		for (int i = 0; i <= r; ++i)
		{
			for (int j = 1; j <= r; ++j)
			{
				var d = i * i + j* j;
				if(d <= ab[1]) cnt[d]++;
			}
		}
		long max = 0;
		for(int i = ab[0]; i <= ab[1]; ++i) max = Math.Max(max, cnt[i]);
		Console.WriteLine(max * 4);
	}
}