# -*- coding: utf-8 -*-
"""
xrisi strings gia ipologismo arithmitikon parastaseon
@authors: geokoutsiouri katkaranikola stkarlos
"""
#na ipologistei to athroisma: S = 9 + 99 + 999 + ... + 9999999999
S = 0
for i in range(1,11): #10 sinolika orous exoume
x = '9' * i
S = S + int(x)
print S
print 'teliki timi S = %d' %S