str = ReadLine(fin);
        if (str != NULL)
        {
            fprintf(fout, "%s", str);
            i = 0;
            while (isspace(str[i]) != 0)
                i++;
            if (str[i] == 0 || ((str[i + 1] == '/') && (str[i] == '/')))
            {
                fprintf(fout, "\n");
            }
            else
            {
                if (i > 0)
                    fprintf(fout, " == ERROR: impossible\n");
                else
                {
                    for (i = 0; str[i] != 0; i++)
                    {
                        if (str[i] == '(')
                            inp++;
                        if (str[i] == ')')
                            exp++;
                    }
                    if (inp != exp)
                    {
                        fprintf(fout, " == ERROR: not skobok\n");
                        inp = 0;
                        exp = 0;
                    }
                    else
                        fprintf(fout, " == %g\n", 56.676);
                }
            }
            free(str);
        }