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

public class Hello
{
    public static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        var a = int.Parse(line[0]);
        var b = int.Parse(line[1]);
        Console.WriteLine(getAns(a, b));
    }
    public static int getAns(int a, int b)
    {
        var ans = new List<int>();
        if (b < a) return getAns(b, a);
        for (int i = 0; i <= 200; i++)
            for (int j = 1; j <= 200; j++)
            {
                var w1 = 100d * i / (i + j);
                var r1 = Math.Round(w1, 0, MidpointRounding.AwayFromZero);
                var w2 = 100d * j / (i + j);
                var r2 = Math.Round(w2, 0, MidpointRounding.AwayFromZero);
                if (r1 == a && r2 == b) ans.Add(i + j);
            }
        return ans.Min();
    }
}