using System;

namespace Code
{
    class Program
    {
        static void Main(string[] args)
        {
            string line = Console.ReadLine();
            string[] values = line.Split(' ');
            int X = int.Parse(values[0]);
            int Y = int.Parse(values[1]);
            int maxSum = 0;

            for (int k = X; k <= Y; k++)
            {
                int sum = 0;
                int s = 0;
                int l = (int)Math.Sqrt(k);

                while (s <= l)
                {
                    while (s*s + l*l > k) l--;
                    if (s*s + l*l == k)
                    {
                        if (l * l == k || s == l) sum += 4;
                        else sum += 8;
                        s++;
                        l--;
                    }
                    if (s > l) break;

                    while (s*s + l*l < k) s++;
                    if (s * s + l * l == k)
                    {
                        if (l * l == k || s == l) sum += 4;
                        else sum += 8;
                        s++;
                        l--;
                    }
                }

                if (sum > maxSum) maxSum = sum;
            }

            Console.WriteLine(maxSum);
        }
    }
}