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 number = Integer.parseInt(a + b);

		for(int i = 2; i*i <= number; i++) {
			if(i * i == number) {
				System.out.println("Yes");
				return;
			}
		}
		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 number = Integer.parseInt(a + b);

		for(int i = 2; i*i <= number; i++) {
			if(i * i == number) {
				System.out.println("Yes");
				return;
			}
		}
		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 number = Integer.parseInt(a + b);

		for(int i = 2; i*i <= number; i++) {
			if(i * i == number) {
				System.out.println("Yes");
				return;
			}
		}
		System.out.println("No");
	} main {


		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();

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

		for(int i = 2; i*i <= number; i++) {
			if(i * i == number) {
				System.out.println("Yes");
				return;
			}
		}
		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 number = Integer.parseInt(a + b); number Integer.parseInt(a + b) Integer.parseInt Integer a + b a b for(int i = 2; i*i <= number; i++) {
			if(i * i == number) {
				System.out.println("Yes");
				return;
			}
		} int i = 2; int i = 2; i 2 i*i <= number i*i i i number i++ i++ i {
			if(i * i == number) {
				System.out.println("Yes");
				return;
			}
		} {
			if(i * i == number) {
				System.out.println("Yes");
				return;
			}
		} if(i * i == number) {
				System.out.println("Yes");
				return;
			} i * i == number i * i i i number {
				System.out.println("Yes");
				return;
			} System.out.println("Yes") System.out.println System.out System System.out "Yes" return; 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 number = Integer.parseInt(a + b);

		for(int i = 2; i*i <= number; i++) {
			if(i * i == number) {
				System.out.println("Yes");
				return;
			}
		}
		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 number = Integer.parseInt(a + b);

		for(int i = 2; i*i <= number; i++) {
			if(i * i == number) {
				System.out.println("Yes");
				return;
			}
		}
		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 number = Integer.parseInt(a + b);

		for(int i = 2; i*i <= number; i++) {
			if(i * i == number) {
				System.out.println("Yes");
				return;
			}
		}
		System.out.println("No");
	}
}