# IPv4, subnet va manzil validatsiyasi
# Faqat sintetik, lokal o‘quv misoli.

from ipaddress import ip_address, ip_network
scope = ip_network("192.168.56.0/24")
addresses = ["192.168.56.10", "192.168.57.1", "192.168.56.200"]
print(sum(ip_address(a) in scope for a in addresses))