n=int(input())
a=list(map(int,input().split()))
s=[]
for i in range(n-1):
  s+=["<" if a[i]<a[i+1] else ">"]
b=0
c=0
for i in range(len(s)):
  if s[i]==">":
    b+=i-c
    c+=1
print(b)