n = int(input())
a = list(map(int, input().split()))

if n < 3:
    print(0)
else:
    up = 1
    down = 1
    for i in range(1, n):
        diff = a[i] - a[i-1]
        if diff > 0:
            up = down + 1
        elif diff < 0:
            down = up + 1
    max_len = max(up, down)
    print(max_len if max_len >=3 else 0)