import os

dir = os.path.dirname(os.path.abspath(__file__))

input_file = open(os.path.join(dir, './input.txt'), 'r')
lines = input_file.readlines()

last_depth = -1
count = 0
for line in lines:
    int_value = int(line)
    if last_depth == -1:
        last_depth = int_value
        continue

    if int_value > last_depth:
        count = count+1

    last_depth = int_value

print(count)