using System;

using System.Collections.Generic;

using System.Text.RegularExpressions;

using System.Linq;

public class Program

{

    public List<string> makelist(string data){

        List<string> ret = new List<string>();

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

            if(i+1<data.Length){

                Console.WriteLine("d is : "+data.Substring(i,2));

                ret.Add(data.Substring(i,2));

            }

        }

        return ret;

    }

    public void Main()

    {

        string str1 = "aa1+aa2";

        string str2 = "AAAA12";

        int ans = 0;

        str1 = str1.ToUpper();

        str2 = str2.ToUpper();

        List<string> st1list = new List<string>();

        List<string> st2list = new List<string>();

        st1list = makelist(str1);

        st2list = makelist(str2);

        Console.WriteLine("tusin : "+checkList(st1list,st2list));

    }

    public int checkList(List<string> l1, List<string> l2){

        int ret = 0;

        List<string> gyo = inList(l1,l2);

        List<string> hap = unList(l1,l2);

        for(int i=0;i<gyo.Count;i++){

            Console.WriteLine("a is : "+gyo[i]);

        }

        for(int i=0;i<hap.Count;i++){

            Console.WriteLine("h is : "+hap[i]);

        }

        ret = (int)Math.Round((((float)gyo.Count/(float)hap.Count)*65536),0);

        Console.WriteLine("ret is : "+gyo.Count+"/"+hap.Count+", "+ret);

        return ret;

    }

    public List<string> inList(List<string> l1, List<string> l2){

        List<string> ret = new List<string>();

        string str = @"[^a-zA-Z]";

        Regex rex = new Regex(str);

        foreach(string st in l1){

            if(!rex.IsMatch(st)){

                ret.Add(st);

            }

        }

        return ret;

    }

    public List<string> unList(List<string> l1, List<string> l2){

        l1 = new List<string>(l1);

        l2 = new List<string>(l2);

        List<string> ret = new List<string>();

        string str = @"[^a-zA-Z]";

        Regex rex = new Regex(str);

        for(int i=0;i<l1.Count;i++){

            if(!rex.IsMatch(l1[i])){

                l2.Remove(l1[i]);

                ret.Add(l1[i]);

            }

        }

        foreach(string st in l2){

            if(!rex.IsMatch(st)){

                ret.Add(st);

            }

        }

        return ret;

    }

}