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();
a+=b;
double i=Double.valueOf(a);
int j=(int)Math.sqrt(i);
if(Math.pow(j,2)==i){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