n = input() result = 0 for i in range(1,len(n)): result+=9*10**(i-1)*i result +=(int(n)-10**(len(n)-1)+1)*len(n) print(result)
n = input()
result = 0
for i in range(1,len(n)):
result+=9*10**(i-1)i
result +=(int(n)-10*(len(n)-1)+1)*len(n)
print(result)