def beautifulPairs(A, B):
    # Write your code here
    count = 0
    
    if len(A) == 1:
        return count
    
    for i in A:
        if i in B:
            count += 1
            B.remove(i)
            
    if (count < len(A)):
        return count + 1 
    else:
         return len(A) - 1