We were preparing questions for code ab initio and we were stuck at a question for 3 hours and rachit went to sleep !! So, rachit definitely did not like this question !! your task is to help rachit solving this problem !! :P

Input: One line containing an integer.

Output: Yes if given integer is a perfect square else print No

Sample Input 1: 4

Sample output 1: Yes

Sample Input 2: 5

Sample output 2: No