import java.util.*;

public class Main{
    public static void main(String[] argc){
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        int num = Integer.parseInt(a + b);
        int sq = (int)Math.sqrt(num);

        if(sq*sq == num){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
} import java.util.*; util.* java public class Main{
    public static void main(String[] argc){
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        int num = Integer.parseInt(a + b);
        int sq = (int)Math.sqrt(num);

        if(sq*sq == num){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
} Main public static void main(String[] argc){
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        int num = Integer.parseInt(a + b);
        int sq = (int)Math.sqrt(num);

        if(sq*sq == num){
            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 num = Integer.parseInt(a + b);
        int sq = (int)Math.sqrt(num);

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

        int num = Integer.parseInt(a + b);
        int sq = (int)Math.sqrt(num);

        if(sq*sq == num){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
} public class Main{
    public static void main(String[] argc){
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        int num = Integer.parseInt(a + b);
        int sq = (int)Math.sqrt(num);

        if(sq*sq == num){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
} Main
import java.util.*;

public class Main{
    public static void main(String[] argc){
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        int num = Integer.parseInt(a + b);
        int sq = (int)Math.sqrt(num);

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