private void SaveToFile(string path, IPv4 ip, List <Branch> branches)
{
FileStream fs = new FileStream(path, FileMode.OpenOrCreate);
StreamWriter sw = new StreamWriter(fs);
sw.WriteLine($"{ip.ToDecimalString()}/{ip.Suffix}");
for (int i = 0; i < branches.Count; ++i)
{
sw.Write($"{branches[i].Name}:{branches[i].HostsAmount}");
if (i != branches.Count - 1)
{
sw.WriteLine();
}
}
sw.Close();
fs.Close();
}