import numpy as np

file = "inputs/day8.input"
numbers = [
    x.decode().split("|")[1].replace("\n", "") for x in open(file, "rb").readlines()
]


def count(l):
    counter = 0
    for string in l:
        substring = string.split(" ")
        for cypher in substring:
            if len(cypher) in [2, 3, 4, 7]:
                counter += 1
    return counter


print(count(numbers))