karan-and-even-numbers-reloaded
Source: hackerearth
Difficulty: EASY

You are already aware of Karan's fondness for even numbers. Since you have helped him out in the past, he again reaches out to you for help.

He has a very long list of numbers, but this time, the numbers are in a space separated format. All you need to do is to print the even numbers from the list, one per line. The list ends when -1 is encountered.

Input: The list.

Output: Print even numbers from the list, one per line.

Constraints: -1 ≤ i ≤ 10^18

SAMPLE INPUT
1 3 4 7 9 6 -1

SAMPLE OUTPUT
4
6