import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int joined = Integer.parseInt(a + b);
		if (Math.floor(Math.sqrt(joined)) - Math.sqrt(joined) == 0) {
			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) throws Exception {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int joined = Integer.parseInt(a + b);
		if (Math.floor(Math.sqrt(joined)) - Math.sqrt(joined) == 0) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}
} Main public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int joined = Integer.parseInt(a + b);
		if (Math.floor(Math.sqrt(joined)) - Math.sqrt(joined) == 0) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	} main {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int joined = Integer.parseInt(a + b);
		if (Math.floor(Math.sqrt(joined)) - Math.sqrt(joined) == 0) {
			System.out.println("Yes");
		} else {
			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 joined = Integer.parseInt(a + b); joined Integer.parseInt(a + b) Integer.parseInt Integer a + b a b if (Math.floor(Math.sqrt(joined)) - Math.sqrt(joined) == 0) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		} Math.floor(Math.sqrt(joined)) - Math.sqrt(joined) == 0 Math.floor(Math.sqrt(joined)) - Math.sqrt(joined) Math.floor(Math.sqrt(joined)) Math.floor Math Math.sqrt(joined) Math.sqrt Math joined Math.sqrt(joined) Math.sqrt Math joined 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" String[] args args public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int joined = Integer.parseInt(a + b);
		if (Math.floor(Math.sqrt(joined)) - Math.sqrt(joined) == 0) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}
} public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int joined = Integer.parseInt(a + b);
		if (Math.floor(Math.sqrt(joined)) - Math.sqrt(joined) == 0) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int joined = Integer.parseInt(a + b);
		if (Math.floor(Math.sqrt(joined)) - Math.sqrt(joined) == 0) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}
}
