import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();

		for (int i = 0; i < String.valueOf(b).length(); i++) {
			a *= 10;
		}

		int c = a + b;

		if ((int) Math.sqrt(c) * (int) Math.sqrt(c) == c) {
			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 = sc.nextInt();
		int b = sc.nextInt();

		for (int i = 0; i < String.valueOf(b).length(); i++) {
			a *= 10;
		}

		int c = a + b;

		if ((int) Math.sqrt(c) * (int) Math.sqrt(c) == c) {
			System.out.println("Yes");
		} else {

			System.out.println("No");
		}
	}

} Main public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();

		for (int i = 0; i < String.valueOf(b).length(); i++) {
			a *= 10;
		}

		int c = a + b;

		if ((int) Math.sqrt(c) * (int) Math.sqrt(c) == c) {
			System.out.println("Yes");
		} else {

			System.out.println("No");
		}
	} main {

		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();
		int b = sc.nextInt();

		for (int i = 0; i < String.valueOf(b).length(); i++) {
			a *= 10;
		}

		int c = a + b;

		if ((int) Math.sqrt(c) * (int) Math.sqrt(c) == c) {
			System.out.println("Yes");
		} else {

			System.out.println("No");
		}
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc for (int i = 0; i < String.valueOf(b).length(); i++) {
			a *= 10;
		} int i = 0; int i = 0; i 0 i < String.valueOf(b).length() i String.valueOf(b).length() String.valueOf(b).length String.valueOf(b) String.valueOf String b i++ i++ i {
			a *= 10;
		} {
			a *= 10;
		} a *= 10 a 10 int c = a + b; c a + b a b if ((int) Math.sqrt(c) * (int) Math.sqrt(c) == c) {
			System.out.println("Yes");
		} else {

			System.out.println("No");
		} (int) Math.sqrt(c) * (int) Math.sqrt(c) == c (int) Math.sqrt(c) * (int) Math.sqrt(c) (int) Math.sqrt(c) Math.sqrt Math c (int) Math.sqrt(c) Math.sqrt Math c c {
			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 = sc.nextInt();
		int b = sc.nextInt();

		for (int i = 0; i < String.valueOf(b).length(); i++) {
			a *= 10;
		}

		int c = a + b;

		if ((int) Math.sqrt(c) * (int) Math.sqrt(c) == c) {
			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 = sc.nextInt();
		int b = sc.nextInt();

		for (int i = 0; i < String.valueOf(b).length(); i++) {
			a *= 10;
		}

		int c = a + b;

		if ((int) Math.sqrt(c) * (int) Math.sqrt(c) == c) {
			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 = sc.nextInt();
		int b = sc.nextInt();

		for (int i = 0; i < String.valueOf(b).length(); i++) {
			a *= 10;
		}

		int c = a + b;

		if ((int) Math.sqrt(c) * (int) Math.sqrt(c) == c) {
			System.out.println("Yes");
		} else {

			System.out.println("No");
		}
	}

}
