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 i = Integer.parseInt(a + b);
        
        if(Math.sqrt(i) % 1 == 0){
            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();
        
        int i = Integer.parseInt(a + b);
        
        if(Math.sqrt(i) % 1 == 0){
            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();
        
        int i = Integer.parseInt(a + b);
        
        if(Math.sqrt(i) % 1 == 0){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    } main {
        Scanner sc = new Scanner(System.in);
        
        String a = sc.next();
        String b = sc.next();
        
        int i = Integer.parseInt(a + b);
        
        if(Math.sqrt(i) % 1 == 0){
            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 int i = Integer.parseInt(a + b); i Integer.parseInt(a + b) Integer.parseInt Integer a + b a b if(Math.sqrt(i) % 1 == 0){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        } Math.sqrt(i) % 1 == 0 Math.sqrt(i) % 1 Math.sqrt(i) Math.sqrt Math i 1 0 {
            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();
        
        int i = Integer.parseInt(a + b);
        
        if(Math.sqrt(i) % 1 == 0){
            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();
        
        int i = Integer.parseInt(a + b);
        
        if(Math.sqrt(i) % 1 == 0){
            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();
        
        int i = Integer.parseInt(a + b);
        
        if(Math.sqrt(i) % 1 == 0){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
}
