1938: Bathe

Memory Limit:128 MB Time Limit:1.000 S
Submit数:2 Solved数:2

Description

Peter is a cleanly boy.One day,he finds  that  the  number of cabinet has not been the 

number '4'  when he goes to the bathhouse . Peter is curious about that .Maybe , in the
opinion of boss of bathhouse,  '4'  is a unlucky number .
  Now Peter knows the biggest number of the cabinet  N , can you help Peter to calculate


the amount of  cabinet in total?

Input描述

The input contains many test cases . Each line has a positive integer N.

( 1 <= N <= 50000 )

Output描述

For each test case, you should output one line . That is, Output the amount of  cabinet.

Sample Input Copy

3
5

Sample Output Copy

3
4
Problem :   1938        Language:        




    # 输入数据自测: