using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Text;
using System.Text.RegularExpressions;
using System.Linq;
using System.IO;


class Magatro
{
    static Scanner sc = new Scanner();
    static int A, B;
    static void Main()
    {
        A = sc.NextInt();
        B = sc.NextInt();
        int min = int.MaxValue;
        for(int a = 0; a <= 100; a++)
        {
            for(int b = 0; b <= 100; b++)
            {
                if (a == 0 && b == 0)
                {
                    continue;
                }
                
                if (An(a, b))
                {
                    min = Math.Min(min, a + b);
                }
            }
        }
        Console.WriteLine(min);
    }
   static bool An(int a,int b)
    {
        double Ta = (100.0 * a) / (a + b);
        double Tb = (100.0 * b) / (a + b);
        //Console.WriteLine("{0} {1}", Ta, Math.Round(Ta,MidpointRounding.AwayFromZero));
        if (A - Math.Round(Ta, MidpointRounding.AwayFromZero)==0 && B - Math.Round(Tb, MidpointRounding.AwayFromZero)==0)
        {
            return true;
        }
        else
        {
            return false;
        }
    }
}

public class Scanner
{
    public string[] S;
    private int Index;
    private char Separator;
    public Scanner(char separator=' ')
    {
        Index = 0;
        Separator = separator;
    }
    public string Next()
    {
        string result;
        if (S == null || Index >= S.Length)
        {
            S = Line();
            Index = 0;
        }
        result = S[Index];
        Index++;
        return result;
    }
    private string[] Line()
    {
        return Console.ReadLine().Split(Separator);
    } 
    public int NextInt()
    {
        return int.Parse(Next());
    }
    public double NextDouble()
    {
        return double.Parse(Next());
    }
    public long NextLong()
    {
        return long.Parse(Next());
    }
}