#define _CRT_SECURE_NO_WARNINGS

#include <ctype.h>
#include <stdio.h>
#include <iostream>
#include <fstream>
using namespace std;

void strip(istream & i, ostream & o)
{
	unsigned char lin[2048];
	unsigned char* c;

	while (i.good())
	{
		bool instring = false;
		bool wasspace = false;
		bool full = false;
		
		i.getline((char *)lin, 2048);
		for (c = lin; isspace(*c); c++);  // salta spazi iniziali
		for (; *c; c++)
		{
			full = true;
			if (*c == '/' && *(c+1) == '/') 
      {
				o << '\n';
        break;
      }
			if (*c == '#')
			{
				o << *c;
				while (isspace(*(++c)));
		//		c--;
			}
			else
				if (*c == '"' || *c == '\'')
					instring = !instring;
			if (isspace(*c))
			{
				if (!instring)
				{
					if (wasspace && *c != '\n') 
            continue;
					wasspace = true;
				}
			} 
      else 
        wasspace = false;
			o << *c;
		}
		if (full)
			o << '\n';
	}
}


int main(int argc, char ** argv)
{
//	cerr << "Strip 1.2 - White spaces filter by Guy 2012" << endl;
	if (argc == 1)
		strip(cin, cout);
	else
	{
		ifstream fin(argv[1]);

		if (argc == 2)
			strip(fin, cout);
		else
		{
			ofstream fout(argv[2]);

			strip(fin, fout);
		}
	}
	return 0;
}