import java.util.Scanner;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);

		String a = sc.next();

		String b = sc.next();
		String c= a+b;
    double d =	Integer.parseInt(c);
		double e = Math.floor(Math.sqrt(d));
		if (d-(e*e)==0){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
} import java.util.Scanner; Scanner 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 c= a+b;
    double d =	Integer.parseInt(c);
		double e = Math.floor(Math.sqrt(d));
		if (d-(e*e)==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();
		String c= a+b;
    double d =	Integer.parseInt(c);
		double e = Math.floor(Math.sqrt(d));
		if (d-(e*e)==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();
		String c= a+b;
    double d =	Integer.parseInt(c);
		double e = Math.floor(Math.sqrt(d));
		if (d-(e*e)==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 String c= a+b; c a+b a b double d =	Integer.parseInt(c); d Integer.parseInt(c) Integer.parseInt Integer c double e = Math.floor(Math.sqrt(d)); e Math.floor(Math.sqrt(d)) Math.floor Math Math.sqrt(d) Math.sqrt Math d if (d-(e*e)==0){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		} d-(e*e)==0 d-(e*e) d (e*e) e e 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){
		Scanner sc = new Scanner(System.in);

		String a = sc.next();

		String b = sc.next();
		String c= a+b;
    double d =	Integer.parseInt(c);
		double e = Math.floor(Math.sqrt(d));
		if (d-(e*e)==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();
		String c= a+b;
    double d =	Integer.parseInt(c);
		double e = Math.floor(Math.sqrt(d));
		if (d-(e*e)==0){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
} Main
import java.util.Scanner;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);

		String a = sc.next();

		String b = sc.next();
		String c= a+b;
    double d =	Integer.parseInt(c);
		double e = Math.floor(Math.sqrt(d));
		if (d-(e*e)==0){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
}
