using System;

namespace ConsoleApp3
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] ss = Console.ReadLine().Split();
            double a = double.Parse(ss[0]);
            double b = double.Parse(ss[1]);


            for (int x = 0; x <= 200; x++)
            {
                bool f = false;
                for (int y = 0; x + y <= 200; y++)
                {
                    double a2 = Math.Round((100 * (double)x) / (x + y), MidpointRounding.AwayFromZero);
                    double b2 = Math.Round((100 * (double) y) / (x + y), MidpointRounding.AwayFromZero);
                    if (a == a2 && b == b2)
                    {
                        Console.WriteLine(x + y);
                        f = true;
                        break;
                    }
                }
                if (f) break;
            }
        }
    }
}