"""Advent day 1, challenge 1

Count the number of times the input number
is higher than the previous one
"""

first = False
prev_depth = None
n_increased = 0
with open("1_1_input.txt") as f:
    for line in f:
        depth = int(line)
        if (prev_depth is not None
                and depth > prev_depth):
            n_increased += 1

        prev_depth = depth

print(n_increased)