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();
        String c = a+b;
        int num = Integer.parseInt(c);

        int num2 = (int)Math.sqrt(num);

        if(num ==(num2*num2)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }




        
    }
} import java.util.*; util.* java public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        String c = a+b;
        int num = Integer.parseInt(c);

        int num2 = (int)Math.sqrt(num);

        if(num ==(num2*num2)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }




        
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        String c = a+b;
        int num = Integer.parseInt(c);

        int num2 = (int)Math.sqrt(num);

        if(num ==(num2*num2)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }




        
    } main {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        String c = a+b;
        int num = Integer.parseInt(c);

        int num2 = (int)Math.sqrt(num);

        if(num ==(num2*num2)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }




        
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String a = sc.next(); a sc.next() sc.next sc String b = sc.next(); b sc.next() sc.next sc String c = a+b; c a+b a b int num = Integer.parseInt(c); num Integer.parseInt(c) Integer.parseInt Integer c int num2 = (int)Math.sqrt(num); num2 (int)Math.sqrt(num) Math.sqrt Math num if(num ==(num2*num2)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        } num ==(num2*num2) num (num2*num2) num2 num2 {
            System.out.println("Yes");
        } System.out.println("Yes") System.out.println System.out System System.out "Yes" {
            System.out.println("No");
        } System.out.println("No") System.out.println System.out System System.out "No" String[] args args public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        String c = a+b;
        int num = Integer.parseInt(c);

        int num2 = (int)Math.sqrt(num);

        if(num ==(num2*num2)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }




        
    }
} public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        String c = a+b;
        int num = Integer.parseInt(c);

        int num2 = (int)Math.sqrt(num);

        if(num ==(num2*num2)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }




        
    }
} Main
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();
        String c = a+b;
        int num = Integer.parseInt(c);

        int num2 = (int)Math.sqrt(num);

        if(num ==(num2*num2)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }




        
    }
}
