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  1. Prepare
  2. Python
  3. Sets
  4. No Idea!
  5. Discussions

No Idea!

  • ValitovVlad
     + 0 comments

    Hi there! Solution with sets

    # Enter your code here. Read input from STDIN. Print output to STDOUT
n, m = map(int, input().split()) 
arrn = list(map(int, input().split()))

# 2 disjoint sets
At = set(map(int, input().split()))
Bt = set(map(int, input().split()))
happy = 0
for i in arrn:
    if i in At:
        happy +=1 
    if i in Bt:
        happy -= 1
    else:
        happy = happy
print(happy)