def line_ints(): return list(map(int, input().strip().split()))


n = int(input())
l = []
for i in range(n):
    l.append(line_ints())

res = 0
for i in range(len(l)):
    first_1 = True
    for x in l[i]:
        if first_1:
            first_1 = False
            continue

        for j in range(i + 1, len(l)):
            first_2 = True
            for y in l[j]:
                if first_2:
                    first_2 = False
                    continue
                if y >= x:
                    continue
                res += 1
print(res)