N = int(input())
length = [int(input()) for i in range(N)]

# N <= 8 * 10**4, length <= 10**9

# method 1, has some time exceeded

"""
sum = 0

for i in range(N):
	for j in range(i+1,N):
		if length[i] > length[j]:
			sum += 1
		elif length[i] <= length[j]:
			break
"""

# method 2

sum = 0
i = 0
while i < N:
    for j in range(i + 1, N):
        if length[i] > length[j]:
            sum += 1
        elif length[i] <= length[j]:
            # maybe something here?
            break
print(sum)