Vanya got an important task — he should enumerate books in the library and label each book with its number. Each of the *n* books should be assigned with a number from 1 to *n*. Naturally, distinct books should be assigned distinct numbers.

Vanya wants to know how many digits he will have to write down as he labels the books.
The first line contains integer *n* (1 ≤ *n* ≤ 10<sup class="upper-index">9</sup>) — the number of books in the library.
n=input()
s=len(n)
c=0
for j in range(s-1):
  c=c+(9*(10**(j)))
  print(c)
x=int(n)-(10**(s-1))+1  
print(x*s+c)