n = int(input())
a = list(map(int, input().split()))
b = sorted(a)
out = 0
for i in range(n):
    now1 = a[n - i - 1]
    now2 = b[n - i - 1]
    #print(now1, now2, a.index(now2))
    if now1 == now2:
        pass
    else:
        a[a.index(now2)] = now1
        a[n - i - 1] = now2
        out += 1
print(out)