scum

#a = raw_input()
#b = raw_input()
#c = bin(a)
#d = bin(b)

#print a,b,bin(a),bin(b)

#a = 53
#b = 254
#print a & b
#print 0 | 255
#print 255 ^ 254

some_ip_str = raw_input()
ip_str = some_ip_str.split("/")[0]
mask_str = some_ip_str.split("/")[1]
for j in
	mask1_str = mask_str.split(".")
#i/4
#for i in xrange(mask_str) :
	#a = 2^(i/4)


print "Ip : ", ip_str
print "Mask : ", mask_str
print "Ip_network : ",ip_str & mask_str
#print "Mask1 : ",mask1_str