#include<iostream>
#include<stdio.h>
#include<list>
#include<string>

#ifndef _CLASS_DIFF_
#define _CLASS_DIFF_

#define FIRST_STRING true
#define SECOND_STRING false

using namespace std;

template<typename CHAR = char>
class SFNDiff
{
	typedef basic_string<CHAR> String;
	typedef list<String> Lstring;
	typedef CHAR Char;
private:
	Lstring	m_text1;
	String m_originalText1;
	list<String>	m_text2;
	Lstring m_originalText2;
protected:
	const Lstring &GetText(bool bFirstTextAsked) const
	{
		return bFirstTextAsked?m_text1:m_text2;
	}
	
	String ToString(bool bFirstTextAsked) const
	{
		const Lstring & text = GetText(bFirstTextAsked);
		Lstring::const_iterator it;
		String result;
		for(it = text.begin();it!=text.end();it++)
		{
			result << *it;
		}
		return result;
	}
	
	virtual bool IsSeparator(const Char &elem) const
	{
		return true;
	}
	virtual void StoreWord(const String& s,bool isWord1)
	{
		Lstring& result = isWord1?m_text1:m_text2;
		result.erase();
		String sWord;
		Lstring::const_iterator it = s.begin();
		while(it!=s.end())
		{
			if(!IsSeparator(*it))
				result.push_back(*it);
			it++;
		}
	}
	const String& GetString(bool bFirstWord) const
	{
		return bFirstWord?m_originalText1:m_originalText2;
	}
public:
	SFNDiff(String iw1,String iw2):m_originalText1(iw1), m_originalText2(iw2)
	{
		StoreWord(iw1,FIRST_STRING);
		StoreWord(iw2,SECOND_STRING);
	}
	String ToString()
	{
		String result;
		result << "{SFNDiff[";
		result << m_originalText1;
		result << ",";
		result << m_originalText2;
		result << "]=";
		result << ToString(FIRST_STRING);
		result << ",";
		result << ToString(SECOND_STRING);
		result << "}";
		return result;
	}
};

#endif


bool IsNbArgValid(int argc)
{
	return argc==3;
}

int main(int argc,char* argv[])
{
	if(IsNbArgValid(argc))
	{
		SFNDiff diff(argv[1],argv[2]);
		cout << diff.ToString() << endl;
	}else
		cout << argv[0] << " is excpecting 2 arguments" << endl;
	return 0;
}