import sys

N = int(sys.stdin.readline().rstrip())
numbers = [int(x) for x in sys.stdin.readline().split()]

start = 0
ans = 0

while N - start >= 19:
    correct = True
    for it in xrange(9):
        if numbers[it] >= numbers[it + 1]:
            correct = False
    for it in xrange(9, 18):
        if numbers[it] <= numbers[it + 1]:
            correct = False

    if correct:
        ans += 1

    start += 1

print ans