def print_full_name(a, b): print ( "Hello" + " " + a + " " + b+ "! ""You just delved into python." ) if __name__ == '__main__' : first_name = input () last_name = input () print_full_name(first_name, last_name)
a=int(input()) set1=set(map(int,input().split())) b=int(input()) set2=set(map(int,input().split())) set3=set1.difference(set2) print(len(set3))