n = input()

c = 0

# 1
c += len(n)

# 2
c += 1

# 3
d = {'0':1, '1':0, '2':0, '3': 0, '4':1, '5':0, '6':1, '7':0, '8':2, '9':1}
for i in n:
    c += d[i]

# 4
c += len(n)

print(c)