# -*- coding: utf-8 -*-

n = input()
singles = ['0','4','6','9']
doubles = ['8']

hole_num = 0
for c in n:
    if c in singles:
        hole_num += 1
    elif c in doubles:
        hole_num += 2
char_num = len(n)

answer_1 = 2*char_num + hole_num + 1
answer_2 = 2*(hole_num+1) + char_num
answer = min(answer_1, answer_2)

print(answer)