import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		
		try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			
			int ab = Integer.parseInt(a + b);
			int temp = (int)Math.sqrt(ab);
			
			if (Math.pow(temp,2) == ab) {
				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) {
		
		try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			
			int ab = Integer.parseInt(a + b);
			int temp = (int)Math.sqrt(ab);
			
			if (Math.pow(temp,2) == ab) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		}

	}

} Main public static void main(String[] args) {
		
		try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			
			int ab = Integer.parseInt(a + b);
			int temp = (int)Math.sqrt(ab);
			
			if (Math.pow(temp,2) == ab) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		}

	} main {
		
		try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			
			int ab = Integer.parseInt(a + b);
			int temp = (int)Math.sqrt(ab);
			
			if (Math.pow(temp,2) == ab) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		}

	} try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			
			int ab = Integer.parseInt(a + b);
			int temp = (int)Math.sqrt(ab);
			
			if (Math.pow(temp,2) == ab) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		} {
			String a = sc.next();
			String b = sc.next();
			
			int ab = Integer.parseInt(a + b);
			int temp = (int)Math.sqrt(ab);
			
			if (Math.pow(temp,2) == ab) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		} Scanner sc = new Scanner(System.in) Scanner sc = new Scanner(System.in) 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 ab = Integer.parseInt(a + b); ab Integer.parseInt(a + b) Integer.parseInt Integer a + b a b int temp = (int)Math.sqrt(ab); temp (int)Math.sqrt(ab) Math.sqrt Math ab if (Math.pow(temp,2) == ab) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			} Math.pow(temp,2) == ab Math.pow(temp,2) Math.pow Math temp 2 ab {
				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) {
		
		try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			
			int ab = Integer.parseInt(a + b);
			int temp = (int)Math.sqrt(ab);
			
			if (Math.pow(temp,2) == ab) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		}

	}

} public class Main {

	public static void main(String[] args) {
		
		try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			
			int ab = Integer.parseInt(a + b);
			int temp = (int)Math.sqrt(ab);
			
			if (Math.pow(temp,2) == ab) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		}

	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		
		try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			
			int ab = Integer.parseInt(a + b);
			int temp = (int)Math.sqrt(ab);
			
			if (Math.pow(temp,2) == ab) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		}

	}

}