Middle Number(s)

Time Limit: 1 sec

 

The Problem

Write a computer program that read an integer number N, and find the middle number or numbers between 1 and N.

 

Example

if N = 5 then

1 2 3 4 5

The middle number is 3

If N = 8 then

1 2 3 4 5 6 7 8

The middle numbers are 4 and 5.

 

The Input

Input file contain a series of line, each line contains one integer numbers N (0<N<10¹⁶).

 

The Output

For each line of input, output will show one integer numbes if N is odd or show two integer numbers which are seperated by space if N is even which is or are the middle number or numbers between 1 and N in a separate line.

 

Sample Input

5

8

11

 

Sample Output

3

4 5

6

 

 

 

 

Problem Setter: Shahin ShamS