n = input()

d = {'0':1, '1':0, '2':0, '3': 0, '4':1, '5':0, '6':1, '7':0, '8':2, '9':1}
a = len(n)
b = 0
for i in n:
    b += d[i]

x = 1 + a*2 + b
y = 2 + b*2 + a

print(min(x, y))