using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        string n1=Console.ReadLine();

        string n2=Console.ReadLine();

        Console.WriteLine(check(n1,n2));

    //  string[]a={"23*@#0","12*@#9","bed","abc","345%-@2","234%-@1"};

    //  print(check1(a));

    }

    public static bool check(string str1,string str2)

    { 

        if(str1.Length!=str2.Length)

            return false;

        for(int i=0;i<str1.Length;i++)

        {

            if(char.IsDigit(str1[i]))

            {

                if(str1[i]=='9' && str2[i]!='0')

                    return false;

                else if(str1[i]!='9' && str2[i]=='0')

                {

                    if(str1[i]!=str2[i]-1)

                        return false;

                }

            }

            else if(str1[i]>='a' && str1[i]<='z'  || str1[i]>='A' && str1[i]<='Z')

            {

                if(str1[i]=='z'&& str2[i]!='a'  || (str1[i]=='Z' && str2[i]!='A'))

                    return false;

                else if((str1[i]!='z'  || str1[i]!='Z')) 

                {

                    if((int)str1[i]!=(int)str2[i]-1)

                        return false;

                }

            }

            else

            {

                if(str1[i]!=str2[i])

                    return false;

            }

        }

        return true;

    }

    public static bool[]check1(string[]a)

    {

            int j=0;

            bool[]n=new bool[a.Length/2];

            for(int i=0;i<a.Length-1;i+=2)

            {

                n[j++]=check(a[i+1],a[i]);

            }

            return n;

    }

    public static void print(bool[]a)

    {

        for(int i=0;i<a.Length;i++)

        {

            Console.Write(a[i]);

        }

    }

}