# your code goes here
import ipaddress
a = "1.0.3.0/31"
n = ipaddress.ip_network(unicode(a))
b = ipaddress.ip_interface(unicode(a))
u = set(n.hosts()) - set([b.ip])
u = [str(x) for x in u]
print(", ".join(u))
IyB5b3VyIGNvZGUgZ29lcyBoZXJlCmltcG9ydCBpcGFkZHJlc3MKYSA9ICIxLjAuMy4wLzMxIgoKbiA9IGlwYWRkcmVzcy5pcF9uZXR3b3JrKHVuaWNvZGUoYSkpCmIgPSBpcGFkZHJlc3MuaXBfaW50ZXJmYWNlKHVuaWNvZGUoYSkpCgp1ID0gc2V0KG4uaG9zdHMoKSkgLSBzZXQoW2IuaXBdKQp1ID0gW3N0cih4KSBmb3IgeCBpbiB1XQpwcmludCgiLCAiLmpvaW4odSkpCg==