Description

A cage contains chickens and rabbits (chickens have $2$ legs, rabbits have $4$ legs, and none are disabled). Given the total number of legs $a$ in the cage, determine the minimum and maximum number of animals that could be in the cage.

Input Format

One line containing a positive integer $a$ ($a < 32768$).

Output Format

One line containing two positive integers, the first being the minimum number of animals and the second being the maximum number of animals, separated by a space. If there is no valid answer, output two $0$s separated by a space.

Sample

20

5 10