import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		String a = scanner.next(), b = scanner.next();
		String s = a + b;
		int num = Integer.valueOf(s);
		double sqrt = Math.sqrt(num);
		if((int)sqrt == sqrt){
			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 scanner = new Scanner(System.in);
		String a = scanner.next(), b = scanner.next();
		String s = a + b;
		int num = Integer.valueOf(s);
		double sqrt = Math.sqrt(num);
		if((int)sqrt == sqrt){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}

} Main public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		String a = scanner.next(), b = scanner.next();
		String s = a + b;
		int num = Integer.valueOf(s);
		double sqrt = Math.sqrt(num);
		if((int)sqrt == sqrt){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	} main {
		Scanner scanner = new Scanner(System.in);
		String a = scanner.next(), b = scanner.next();
		String s = a + b;
		int num = Integer.valueOf(s);
		double sqrt = Math.sqrt(num);
		if((int)sqrt == sqrt){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	} Scanner scanner = new Scanner(System.in); scanner new Scanner(System.in) String a = scanner.next() a scanner.next() scanner.next scanner b = scanner.next(); b scanner.next() scanner.next scanner String s = a + b; s a + b a b int num = Integer.valueOf(s); num Integer.valueOf(s) Integer.valueOf Integer s double sqrt = Math.sqrt(num); sqrt Math.sqrt(num) Math.sqrt Math num if((int)sqrt == sqrt){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		} (int)sqrt == sqrt (int)sqrt sqrt {
			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 scanner = new Scanner(System.in);
		String a = scanner.next(), b = scanner.next();
		String s = a + b;
		int num = Integer.valueOf(s);
		double sqrt = Math.sqrt(num);
		if((int)sqrt == sqrt){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}

} public class Main {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		String a = scanner.next(), b = scanner.next();
		String s = a + b;
		int num = Integer.valueOf(s);
		double sqrt = Math.sqrt(num);
		if((int)sqrt == sqrt){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		String a = scanner.next(), b = scanner.next();
		String s = a + b;
		int num = Integer.valueOf(s);
		double sqrt = Math.sqrt(num);
		if((int)sqrt == sqrt){
			System.out.println("Yes");
		}else{
			System.out.println("No");
		}
	}

}
