n = int(input())
line = [0 for i in range(n)]

for i in range(n):
	line[i] = list(map(int, input().split(" ")))[1:]
#print(line)

line = sorted(line, key=line.count)

counter = 0
for i in range(n):
	for bird in line[i]:			
		for j in range(i+1, n):
			for other_bird in line[j]:
				if bird > other_bird:
#					print(f"Bird: {i} heading {bird} collided bird {j} heading {other_bird}")
					counter += 1
					
print(counter)