import os

def tick(currentLanturnFish):
    new_fish_to_spawn = 0

    for i in range(len(currentLanturnFish)):
        fish = currentLanturnFish[i]
        fish = fish - 1

        if fish < 0:
            new_fish_to_spawn = new_fish_to_spawn + 1
            fish = 6
    
        currentLanturnFish[i] = fish
    for x in range(new_fish_to_spawn):
        currentLanturnFish.append(8)

    return currentLanturnFish

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

with open(os.path.join(dir, './input.txt'), 'r') as input_file:

    lines = input_file.readlines()

    line = lines[0].strip()
    parts = line.split(',')

    fish = []
    for part in parts:
        fish.append(int(part))

    days_to_predict = 80
    for x in range(days_to_predict):
        #print(fish)
        fish = tick(fish)
    print(len(fish))