import java.util.*;

public class Main{
public static void main(String... args){
Scanner sc = new Scanner(System.in);
String a=sc.next();
String b=sc.next();
int ab=Integer.parseInt(a+b);
for(int i=1;i<=Math.sqrt(100100);i++){
if(i*i==ab){
System.out.println("Yes");return;
}
}
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