def item_in_range(item, id_range):
    start = id_range[0]
    end = id_range[1]
    return start <= item <= end

def check_item(item, id_ranges):
    for id_range in id_ranges:
        if item_in_range(item, id_range):
            return True
    return False

def read_input(filename):
    id_ranges = []
    inventory = []

    read_range = True
    for line in open(filename).read().splitlines():

        if line == "":
            read_range = False
            continue

        if read_range:
            id_range = line.split("-")
            id_ranges.append((int(id_range[0]),int(id_range[1])))
        else:
            inventory.append(int(line))

    return id_ranges, inventory

# filename = "day05/example_input" # 3
filename = "day05/input" # 679
id_ranges, inventory = read_input(filename)

counter = 0
for item in inventory:
    if check_item(item, id_ranges):
        counter += 1

print(f"Fresh items: {counter}")