N = int(input())
A = list(map(int, input().split()))

s = []
p, q = 0, 0
for i in range(N-1):
    s.append('<'if A[i+1]>A[i] else '>')

res = 0
id = 0
for i in range(N-1):
    if s[i]=='>':
        res += i-id
        id += 1
print(res)