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#include <iostream>
#include <fstream>

void convert(const char* input, const char* output)
{
    std::ifstream fin(input);

    if (fin)
    {
        std::ofstream fout(output);

        std::string s;

        while (std::getline(fin, s))
        {
            if (s.empty() || s[0] != '#')
            {
                fout << s << std::endl;
            }
        }
    }
}

int main(int argc, char* argv[])
{
    if (argc != 3)
    {
        std::cerr << "usage: input output" << std::endl;

        return -1;
    }

    convert(argv[1], argv[2]);

    return 0;
}