#include <cstdlib>     // for exit
#include <iostream>
#include <fstream>
#include <string>
#include <map>
#include <vector>
#include <strstream>    // <sstream> according to C++ standard
using namespace std;

class Line
{
  public:

    Line();
    Line(istream& input);
    
    int     size()         const;
    string  getWord(int n) const;

    const string& operator[](int n) const;

  private:
    
    vector<string> myWords;
};


Line::Line()
{
    // nothing to do
}

Line::Line(istream& input)
// post: line read from input, stored in *this    
{
    string line,word;
    getline(input,line);
    // istringstream in(line);   // this is up-to-date version
    istrstream in(line.c_str());

    while (in >> word)
    {
	myWords.push_back(word);
    }
}

int Line::size() const
// post: returns # words in a line    
{
    return myWords.size();
}

string Line::getWord(int n) const
// pre: 0 <= n < size()
// post: return n-th word
{
    return myWords[n];
}

const string& Line::operator[](int n) const
// pre: 0 <= n < size()
// post: return n-th word
{
    return myWords[n];
}

class Lines
{
  public:

    Lines(istream& input);

    int size()          const;
    Line getLine(int n) const;
    
 private:

    vector<Line> myLines;
};


Lines::Lines(istream& input)
// post: all lines from input read and stored    
{
    while (input)
    {
	myLines.push_back(Line(input));
    }
}

int Lines::size() const
// post: returns # lines     
{
    return myLines.size();
}

Line Lines::getLine(int n) const
// pre: 0 <= n < size()
// post: returns # lines    
{
    return myLines[n];
}

int main(int argc, char * argv[])
{

    if (argc == 1)
    {
	cerr << "usage: " << argv[0] << " filename " << endl;
	exit(1);
    }
    
    ifstream input(argv[1]);
    Lines all(input);
    int j,k;
    
    for(j=0; j < all.size(); j++)
    {
	Line one = all.getLine(j);
	for(k=0; k < one.size(); k++)
	{
	    cout << j << "." << k << "\t" << one.getWord(k) << endl;
//	    cout << j << "." << k << "\t" << one[k] << endl;	    
	}
    }
    return 0;
}