n = int(input())

matrix = []
l = [0]*n
for i in range(n):
    arr = list(map(int, input().split()))
    matrix.append(arr[1:])
    for j in arr[1:]:
        l[j] += 1

f = 0
for i in range(len(matrix)):
    for j in range(len(matrix[i])):
        l[matrix[i][j]] -= 1

        for k in range(matrix[i][j]-1,-1, -1 ):
            f += l[k]


print(f)