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);

		if(Double.compare(Math.sqrt(num), Math.floor(Math.sqrt(num))) == 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();

		int num = Integer.parseInt(a + b);

		if(Double.compare(Math.sqrt(num), Math.floor(Math.sqrt(num))) == 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();

		int num = Integer.parseInt(a + b);

		if(Double.compare(Math.sqrt(num), Math.floor(Math.sqrt(num))) == 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();

		int num = Integer.parseInt(a + b);

		if(Double.compare(Math.sqrt(num), Math.floor(Math.sqrt(num))) == 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 int num = Integer.parseInt(a + b); num Integer.parseInt(a + b) Integer.parseInt Integer a + b a b if(Double.compare(Math.sqrt(num), Math.floor(Math.sqrt(num))) == 0){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		} Double.compare(Math.sqrt(num), Math.floor(Math.sqrt(num))) == 0 Double.compare(Math.sqrt(num), Math.floor(Math.sqrt(num))) Double.compare Double Math.sqrt(num) Math.sqrt Math num Math.floor(Math.sqrt(num)) Math.floor Math Math.sqrt(num) Math.sqrt Math num 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();

		int num = Integer.parseInt(a + b);

		if(Double.compare(Math.sqrt(num), Math.floor(Math.sqrt(num))) == 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();

		int num = Integer.parseInt(a + b);

		if(Double.compare(Math.sqrt(num), Math.floor(Math.sqrt(num))) == 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();

		int num = Integer.parseInt(a + b);

		if(Double.compare(Math.sqrt(num), Math.floor(Math.sqrt(num))) == 0){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}
}
