import java.util.Scanner;

public class Main{

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());
		sc.close();
		String str = String.valueOf(a) + String.valueOf(b);
		int num = Integer.valueOf(str);

		double check = Math.sqrt(num);

		if(check == Math.floor(check)) {
			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);
		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());
		sc.close();
		String str = String.valueOf(a) + String.valueOf(b);
		int num = Integer.valueOf(str);

		double check = Math.sqrt(num);

		if(check == Math.floor(check)) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}
	}

} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());
		sc.close();
		String str = String.valueOf(a) + String.valueOf(b);
		int num = Integer.valueOf(str);

		double check = Math.sqrt(num);

		if(check == Math.floor(check)) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}
	} main {
		Scanner sc = new Scanner(System.in);
		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());
		sc.close();
		String str = String.valueOf(a) + String.valueOf(b);
		int num = Integer.valueOf(str);

		double check = Math.sqrt(num);

		if(check == Math.floor(check)) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = Integer.parseInt(sc.next()); a Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int b = Integer.parseInt(sc.next()); b Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc sc.close() sc.close sc String str = String.valueOf(a) + String.valueOf(b); str String.valueOf(a) + String.valueOf(b) String.valueOf(a) String.valueOf String a String.valueOf(b) String.valueOf String b int num = Integer.valueOf(str); num Integer.valueOf(str) Integer.valueOf Integer str double check = Math.sqrt(num); check Math.sqrt(num) Math.sqrt Math num if(check == Math.floor(check)) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		} check == Math.floor(check) check Math.floor(check) Math.floor Math check {
			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);
		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());
		sc.close();
		String str = String.valueOf(a) + String.valueOf(b);
		int num = Integer.valueOf(str);

		double check = Math.sqrt(num);

		if(check == Math.floor(check)) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}
	}

} public class Main{

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());
		sc.close();
		String str = String.valueOf(a) + String.valueOf(b);
		int num = Integer.valueOf(str);

		double check = Math.sqrt(num);

		if(check == Math.floor(check)) {
			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);
		int a = Integer.parseInt(sc.next());
		int b = Integer.parseInt(sc.next());
		sc.close();
		String str = String.valueOf(a) + String.valueOf(b);
		int num = Integer.valueOf(str);

		double check = Math.sqrt(num);

		if(check == Math.floor(check)) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}
	}

}