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 n = Integer.parseInt(a+b);
        if(Math.sqrt(n) - (int)Math.sqrt(n) == 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 n = Integer.parseInt(a+b);
        if(Math.sqrt(n) - (int)Math.sqrt(n) == 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 n = Integer.parseInt(a+b);
        if(Math.sqrt(n) - (int)Math.sqrt(n) == 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 n = Integer.parseInt(a+b);
        if(Math.sqrt(n) - (int)Math.sqrt(n) == 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 n = Integer.parseInt(a+b); n Integer.parseInt(a+b) Integer.parseInt Integer a+b a b if(Math.sqrt(n) - (int)Math.sqrt(n) == 0) System.out.println("Yes");
        else System.out.println("No"); Math.sqrt(n) - (int)Math.sqrt(n) == 0 Math.sqrt(n) - (int)Math.sqrt(n) Math.sqrt(n) Math.sqrt Math n (int)Math.sqrt(n) Math.sqrt Math n 0 System.out.println("Yes") System.out.println System.out System System.out "Yes" 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 n = Integer.parseInt(a+b);
        if(Math.sqrt(n) - (int)Math.sqrt(n) == 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 n = Integer.parseInt(a+b);
        if(Math.sqrt(n) - (int)Math.sqrt(n) == 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 n = Integer.parseInt(a+b);
        if(Math.sqrt(n) - (int)Math.sqrt(n) == 0) System.out.println("Yes");
        else System.out.println("No");
    }  
}