import 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();
		String c = a + b;
		double x = Double.parseDouble(c);
		x = Math.pow(x, 0.5);
		if ((x % 1) == 0) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
		sc.close();
	}

} import java.util.*; util.* java public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		String c = a + b;
		double x = Double.parseDouble(c);
		x = Math.pow(x, 0.5);
		if ((x % 1) == 0) {
			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 a = sc.next();
		String b = sc.next();
		String c = a + b;
		double x = Double.parseDouble(c);
		x = Math.pow(x, 0.5);
		if ((x % 1) == 0) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
		sc.close();
	} main {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		String c = a + b;
		double x = Double.parseDouble(c);
		x = Math.pow(x, 0.5);
		if ((x % 1) == 0) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
		sc.close();
	} 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 String c = a + b; c a + b a b double x = Double.parseDouble(c); x Double.parseDouble(c) Double.parseDouble Double c x = Math.pow(x, 0.5) x Math.pow(x, 0.5) Math.pow Math x 0.5 if ((x % 1) == 0) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		} (x % 1) == 0 (x % 1) x 1 0 {
			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 a = sc.next();
		String b = sc.next();
		String c = a + b;
		double x = Double.parseDouble(c);
		x = Math.pow(x, 0.5);
		if ((x % 1) == 0) {
			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 a = sc.next();
		String b = sc.next();
		String c = a + b;
		double x = Double.parseDouble(c);
		x = Math.pow(x, 0.5);
		if ((x % 1) == 0) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
		sc.close();
	}

} Main
import 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();
		String c = a + b;
		double x = Double.parseDouble(c);
		x = Math.pow(x, 0.5);
		if ((x % 1) == 0) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
		sc.close();
	}

}