using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Sakktáblatorta
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] in1 = Console.ReadLine().Split().Select(int.Parse).ToArray();
            Console.WriteLine(Math.Floor(Math.Sqrt(((in1[0] > in1[1]) ? in1[1] : in1[0]) * 2 + 1)));
        }
    }
}