import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String a = sc.next(), b = sc.next();

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

		double sqrt = Math.floor(Math.sqrt(s));

		if (sqrt * sqrt == s) {
			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(), b = sc.next();

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

		double sqrt = Math.floor(Math.sqrt(s));

		if (sqrt * sqrt == s) {
			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(), b = sc.next();

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

		double sqrt = Math.floor(Math.sqrt(s));

		if (sqrt * sqrt == s) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	} main {
		Scanner sc = new Scanner(System.in);
		String a = sc.next(), b = sc.next();

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

		double sqrt = Math.floor(Math.sqrt(s));

		if (sqrt * sqrt == s) {
			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 b = sc.next(); b sc.next() sc.next sc int s = Integer.parseInt(a + b); s Integer.parseInt(a + b) Integer.parseInt Integer a + b a b double sqrt = Math.floor(Math.sqrt(s)); sqrt Math.floor(Math.sqrt(s)) Math.floor Math Math.sqrt(s) Math.sqrt Math s if (sqrt * sqrt == s) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		} sqrt * sqrt == s sqrt * sqrt sqrt sqrt s {
			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(), b = sc.next();

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

		double sqrt = Math.floor(Math.sqrt(s));

		if (sqrt * sqrt == s) {
			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(), b = sc.next();

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

		double sqrt = Math.floor(Math.sqrt(s));

		if (sqrt * sqrt == s) {
			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(), b = sc.next();

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

		double sqrt = Math.floor(Math.sqrt(s));

		if (sqrt * sqrt == s) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}

}