import java.util.*;
 class Main{

     public static void main(String []args){
      Scanner scan = new Scanner(System.in);
      String m = Integer.toString(scan.nextInt()) ;
      String n = Integer.toString(scan.nextInt()) ;
      int x = Integer.parseInt(m+n) ;
      
      if((Math.sqrt(x) - (int)Math.sqrt(x)) == 0){
          System.out.println("Yes");
      }else{
          System.out.println("No");
      }
      
    }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz