import java.util.*;
import java.util.Collections;
import java.util.ArrayList;

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)){
            System.out.println("Yes");
        }
        else{
            System.out.println("No");
        }
    } 
} import java.util.*; util.* java import java.util.Collections; Collections java.util import java.util.ArrayList; ArrayList 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)){
            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)){
            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)){
            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)){
            System.out.println("Yes");
        }
        else{
            System.out.println("No");
        } Math.sqrt(n)==(int)Math.sqrt(n) Math.sqrt(n) Math.sqrt Math n (int)Math.sqrt(n) Math.sqrt Math n {
            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 n = Integer.parseInt(a + b);

        if(Math.sqrt(n)==(int)Math.sqrt(n)){
            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)){
            System.out.println("Yes");
        }
        else{
            System.out.println("No");
        }
    } 
} Main
import java.util.*;
import java.util.Collections;
import java.util.ArrayList;

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)){
            System.out.println("Yes");
        }
        else{
            System.out.println("No");
        }
    } 
}