import java.util.*;
public class Main{
public static void main(String[]args){
Scanner sc=new Scanner(System.in);
  int n=sc.nextInt();int m=sc.nextInt();
  n=Integer.parseInt(n+""+m);
  int i=0;
  for(i=0;i*i<n;i++){}
  System.out.println((i*i==n)?"Yes":"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