n,m=input().split()

arr=list(map(int, input().split()))

a1=list(map(int, input().split()))

a=set(a1)

b1=list(map(int, input().split()))

b=set(b1)

happiness=0

for i in range(int(n)):

if arr[i] in a:
    happiness=happiness+1

for i in range(int(n)):

if arr[i] in b:
    happiness=happiness-1

print(happiness)

why is everyone converting input to integer when string will also do the same

input()
a = input().split()
h = set(input().split())
s = set(input().split())
print(sum(1 if x in h else -1 if x in s else 0 for x in a))

n, m = map(int, input().split())
array = list(map(int, input().split()))
A = set(map(int, input().split()))
B = set(map(int, input().split()))

happiness = 0 for num in array: if num in A:
happiness += 1 elif num in B:
happiness -= 1

print(happiness)

1. n = map(int,input().split())
2. n_int = list(map(int,input().split()))
3. m_a = set(map(int,input().split()))
4. m_b = set(map(int,input().split()))
5. happiness = 0
6. for i in n_int:
7. if(i in m_a):
8. happiness+=1
9. elif(i in m_b):
10. happiness -=1
11. print(happiness)