def main():
    n = int(input())
    A = list(map(int, input().split()))
    a = ans = 0
    for i in range(n-1):
        d = A[i+1]-A[i]
        if d == 0:
            a = 0
        elif 0 < d:
            a += 1
        else:
            ans += a
    return ans
print(main())