# 公式解説の方法をもう一度やる

N = int(input())
A = list(map(int, input().split()))
signs = []
for i in range(1, N):
    if A[i] > A[i-1]:
        signs.append(+1)
    else:
        signs.append(-1)

count = 0
subcount = 0
for i in range(N-1):
    if signs[i] == 1:
        subcount += 1
    elif signs[i] == -1:
        count += subcount
        subcount = 1
print(count)