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 c = Integer.parseInt(a+b);
		if(Math.sqrt(c) % 1 == 0) {
			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 a = sc.next();
		String b = sc.next();
		int c = Integer.parseInt(a+b);
		if(Math.sqrt(c) % 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();
		int c = Integer.parseInt(a+b);
		if(Math.sqrt(c) % 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();
		int c = Integer.parseInt(a+b);
		if(Math.sqrt(c) % 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 int c = Integer.parseInt(a+b); c Integer.parseInt(a+b) Integer.parseInt Integer a+b a b if(Math.sqrt(c) % 1 == 0) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		} Math.sqrt(c) % 1 == 0 Math.sqrt(c) % 1 Math.sqrt(c) Math.sqrt Math c 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();
		int c = Integer.parseInt(a+b);
		if(Math.sqrt(c) % 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();
		int c = Integer.parseInt(a+b);
		if(Math.sqrt(c) % 1 == 0) {
			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 a = sc.next();
		String b = sc.next();
		int c = Integer.parseInt(a+b);
		if(Math.sqrt(c) % 1 == 0) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}
		sc.close();
	}
}