#!/usr/bin/python

round=256
data = None
lanternfish = dict()

with open("input01.txt","r") as f:
    data = [int(i) for i in f.readline().split(',')]

for i in range(10):
	lanternfish[i] = data.count(i)

for r in range(round):
	lanternfish[7] += lanternfish[0]
	lanternfish[9] = lanternfish[0]
	lanternfish = { k-1:v for (k,v) in lanternfish.items() if k > 0}

print(sum([v for (k,v) in lanternfish.items()]))