def main():
    n = int(input())
    counter = 0
    arrivals = {}
    for i in range(n):
        arr = list(map(int, input().split()))[1:]
        # read current line
        for b in arr:
            # print(f"bird going {i} -> {b}")
            if b not in arrivals:
                arrivals[b] = 0
            arrivals[b] += 1
            for potential in range(b+1, n):
                # print(f"checking collisions with {potential}")
                counter += arrivals[potential] if potential in arrivals else 0
    # print(arrivals)
    print(counter)

main()