eolymp
Competitions

PP1 Week 2 Conditionals Part 2

None of the two conditions

Time limit 1 second
Memory limit 128 MiB

For the given integer n print YES, if none of the next conditions takes place and NO otherwise.

  • number n is even and positive;

  • number n is odd and negative.

Input data

One integer n.

Output data

Print YES or NO depending on conditions.

Examples

Input example #1
7
Output example #1
YES
Input example #2
24
Output example #2
NO
Author Matviychuk Sergiy Volodymyrovych
Source "ABC programming"