Escadinha OBI

# escadinha
# fase 1
# obi 2018
# python
# by Deukaus / Matheus Santos

# https://olimpiada.ic.unicamp.br/pratique/p1/2018/f1/escadinha/

size = int(input())
esc = 1
if size < 1:
    esc = 0
n = input().split(" ")
n = list(map(int, n))
dif = 0
if size == 1:
    print(1)
else:
    for nums in range(1,size):
        dif2 = n[nums] - n[nums-1]
        if dif2 != dif:
            dif = n[nums] - n[nums - 1]
            esc += 1
            print(esc)