419 - Middle Number(s)

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**<10^{16}).

**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