노트

n = int(input()) answer = 0 in_, out = dict(), [] for i in range(n): car = input() in_[car] = i for _ in range(n): car = input() out.append(car) for i in range(n - 1): for j in range(i + 1, n): if in_[out[i]] > in_[out[j]]: answer += 1 break print(answer)