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 s = a + b;
        int c = Integer.parseInt(s);
        double r = Math.sqrt(c);
        if (r == (int) r)
            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 s = a + b;
        int c = Integer.parseInt(s);
        double r = Math.sqrt(c);
        if (r == (int) r)
            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 s = a + b;
        int c = Integer.parseInt(s);
        double r = Math.sqrt(c);
        if (r == (int) r)
            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 s = a + b;
        int c = Integer.parseInt(s);
        double r = Math.sqrt(c);
        if (r == (int) r)
            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 s = a + b; s a + b a b int c = Integer.parseInt(s); c Integer.parseInt(s) Integer.parseInt Integer s double r = Math.sqrt(c); r Math.sqrt(c) Math.sqrt Math c if (r == (int) r)
            System.out.println("Yes");
        else
            System.out.println("No"); r == (int) r r (int) r 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();
        String s = a + b;
        int c = Integer.parseInt(s);
        double r = Math.sqrt(c);
        if (r == (int) r)
            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 s = a + b;
        int c = Integer.parseInt(s);
        double r = Math.sqrt(c);
        if (r == (int) r)
            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 s = a + b;
        int c = Integer.parseInt(s);
        double r = Math.sqrt(c);
        if (r == (int) r)
            System.out.println("Yes");
        else
            System.out.println("No");
    }
}