task6

a = []
b = []

s = ""
while s != "END":
    s = input()
    if (s != "END"):
        a.append(s)
a = set(a)
s = ""
while s != "END":
    s = input()
    if (s != "END"):
        b.append(s)
b = set(b)
print(a)
print(b)
a.difference_update(b)
print(a)
print(len(a))