from sys import argv
import ipaddress

# read the argument how to run this
try:
    script, ip1, ip2 = argv
    a = ip1.split('/')
    b = ip2.split('/')
    
    a = ipaddress.ip_network(a[0]).supernet(new_prefix=int(a[1]))
    b = ipaddress.ip_network(b[0]).supernet(new_prefix=int(b[1]))

    test1 = ipaddress.IPv6Network(a).overlaps(ipaddress.IPv6Network(b))

    if test1 :
        print("overlap")
    else:
        print("no overlap")
        
except:
    print("wrong inpit")