
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();
		sc.close();
		int n = Integer.parseInt(a + b);
		int root = (int) Math.sqrt(n);
		if (root * root == n) {
			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();
		sc.close();
		int n = Integer.parseInt(a + b);
		int root = (int) Math.sqrt(n);
		if (root * root == n) {
			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();
		sc.close();
		int n = Integer.parseInt(a + b);
		int root = (int) Math.sqrt(n);
		if (root * root == n) {
			System.out.println("Yes");
			return;
		}
		System.out.println("No");
	} main {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		sc.close();
		int n = Integer.parseInt(a + b);
		int root = (int) Math.sqrt(n);
		if (root * root == n) {
			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 sc.close() sc.close sc int n = Integer.parseInt(a + b); n Integer.parseInt(a + b) Integer.parseInt Integer a + b a b int root = (int) Math.sqrt(n); root (int) Math.sqrt(n) Math.sqrt Math n if (root * root == n) {
			System.out.println("Yes");
			return;
		} root * root == n root * root root root n {
			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();
		sc.close();
		int n = Integer.parseInt(a + b);
		int root = (int) Math.sqrt(n);
		if (root * root == n) {
			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();
		sc.close();
		int n = Integer.parseInt(a + b);
		int root = (int) Math.sqrt(n);
		if (root * root == n) {
			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();
		sc.close();
		int n = Integer.parseInt(a + b);
		int root = (int) Math.sqrt(n);
		if (root * root == n) {
			System.out.println("Yes");
			return;
		}
		System.out.println("No");
	}

}
