import java.util.Scanner;

public class Main {

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

		int n = Integer.parseInt(s);
		double sqr = Math.sqrt((double) n);
		if (Math.floor(sqr) == sqr) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}

		sc.close();
	}
} import java.util.Scanner; Scanner java.util public class Main {

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

		int n = Integer.parseInt(s);
		double sqr = Math.sqrt((double) n);
		if (Math.floor(sqr) == sqr) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}

		sc.close();
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String s = sc.next() + sc.next();

		int n = Integer.parseInt(s);
		double sqr = Math.sqrt((double) n);
		if (Math.floor(sqr) == sqr) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}

		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);
		String s = sc.next() + sc.next();

		int n = Integer.parseInt(s);
		double sqr = Math.sqrt((double) n);
		if (Math.floor(sqr) == sqr) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}

		sc.close();
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String s = sc.next() + sc.next(); s sc.next() + sc.next() sc.next() sc.next sc sc.next() sc.next sc int n = Integer.parseInt(s); n Integer.parseInt(s) Integer.parseInt Integer s double sqr = Math.sqrt((double) n); sqr Math.sqrt((double) n) Math.sqrt Math (double) n if (Math.floor(sqr) == sqr) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		} Math.floor(sqr) == sqr Math.floor(sqr) Math.floor Math sqr sqr {
			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" sc.close() sc.close sc String[] args args public class Main {

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

		int n = Integer.parseInt(s);
		double sqr = Math.sqrt((double) n);
		if (Math.floor(sqr) == sqr) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}

		sc.close();
	}
} public class Main {

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

		int n = Integer.parseInt(s);
		double sqr = Math.sqrt((double) n);
		if (Math.floor(sqr) == sqr) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}

		sc.close();
	}
} Main
import java.util.Scanner;

public class Main {

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

		int n = Integer.parseInt(s);
		double sqr = Math.sqrt((double) n);
		if (Math.floor(sqr) == sqr) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}

		sc.close();
	}
}