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();
		int num = Integer.parseInt(a + b);
		int tmp =(int)Math.sqrt(num);
		if(tmp * tmp == num){
			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();
		int num = Integer.parseInt(a + b);
		int tmp =(int)Math.sqrt(num);
		if(tmp * tmp == num){
			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 num = Integer.parseInt(a + b);
		int tmp =(int)Math.sqrt(num);
		if(tmp * tmp == 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 tmp =(int)Math.sqrt(num);
		if(tmp * tmp == 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 tmp =(int)Math.sqrt(num); tmp (int)Math.sqrt(num) Math.sqrt Math num if(tmp * tmp == num){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		} tmp * tmp == num tmp * tmp tmp tmp 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[] 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 num = Integer.parseInt(a + b);
		int tmp =(int)Math.sqrt(num);
		if(tmp * tmp == num){
			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 num = Integer.parseInt(a + b);
		int tmp =(int)Math.sqrt(num);
		if(tmp * tmp == num){
			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();
		int num = Integer.parseInt(a + b);
		int tmp =(int)Math.sqrt(num);
		if(tmp * tmp == num){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
 	}
}


