import java.util.*;
 
public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        a += sc.next();
        double b = Double.parseDouble(a);
        if(Math.pow(b,0.5) % 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) throws Exception {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        a += sc.next();
        double b = Double.parseDouble(a);
        if(Math.pow(b,0.5) % 1 == 0){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
} Main public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        a += sc.next();
        double b = Double.parseDouble(a);
        if(Math.pow(b,0.5) % 1 == 0){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    } main {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        a += sc.next();
        double b = Double.parseDouble(a);
        if(Math.pow(b,0.5) % 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 a += sc.next() a sc.next() sc.next sc double b = Double.parseDouble(a); b Double.parseDouble(a) Double.parseDouble Double a if(Math.pow(b,0.5) % 1 == 0){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        } Math.pow(b,0.5) % 1 == 0 Math.pow(b,0.5) % 1 Math.pow(b,0.5) Math.pow Math b 0.5 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) throws Exception {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        a += sc.next();
        double b = Double.parseDouble(a);
        if(Math.pow(b,0.5) % 1 == 0){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        a += sc.next();
        double b = Double.parseDouble(a);
        if(Math.pow(b,0.5) % 1 == 0){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
} Main
import java.util.*;
 
public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        a += sc.next();
        double b = Double.parseDouble(a);
        if(Math.pow(b,0.5) % 1 == 0){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
}
