"""Decode stupid 7 segment displays"""

count = 0
with open("8_input.txt") as f:
    for line in f:
        digits = line.split("|")[1].strip().split(" ")
        for digit in digits:
            if len(digit) in [2, 3, 4, 7]:  # Corresponds to 1, 7, 4, 8
                count += 1

print(count)