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 root = (int) Math.sqrt(num);

		if (Math.pow(root, 2) == 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 root = (int) Math.sqrt(num);

		if (Math.pow(root, 2) == 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 root = (int) Math.sqrt(num);

		if (Math.pow(root, 2) == 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 root = (int) Math.sqrt(num);

		if (Math.pow(root, 2) == 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 root = (int) Math.sqrt(num); root (int) Math.sqrt(num) Math.sqrt Math num if (Math.pow(root, 2) == num) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		} Math.pow(root, 2) == num Math.pow(root, 2) Math.pow Math root 2 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 root = (int) Math.sqrt(num);

		if (Math.pow(root, 2) == 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 root = (int) Math.sqrt(num);

		if (Math.pow(root, 2) == 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 root = (int) Math.sqrt(num);

		if (Math.pow(root, 2) == num) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}

}
