<filename>HackerRank Python Solutions/033. Set.difference() Operation.py
# Set.difference() Operation in Python

_, a = (input(), set(input().split()))
_, b = (input(), set(input().split()))
print(len(a-b))

<filename>HackerRank Python Solutions/033. Set.difference() Operation.py
# Set.difference() Operation in Python

_, a = (input(), set(input().split()))
_, b = (input(), set(input().split()))
print(len(a-b))

# Set.difference() Operation in Python