import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String str = sc.next() + sc.next();
		int val = Integer.parseInt(str);
		int val2 = (int)Math.sqrt(val);
		if(val == (val2 * val2)){
			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) {
		Scanner sc = new Scanner(System.in);
		String str = sc.next() + sc.next();
		int val = Integer.parseInt(str);
		int val2 = (int)Math.sqrt(val);
		if(val == (val2 * val2)){
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String str = sc.next() + sc.next();
		int val = Integer.parseInt(str);
		int val2 = (int)Math.sqrt(val);
		if(val == (val2 * val2)){
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	} main {
		Scanner sc = new Scanner(System.in);
		String str = sc.next() + sc.next();
		int val = Integer.parseInt(str);
		int val2 = (int)Math.sqrt(val);
		if(val == (val2 * val2)){
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String str = sc.next() + sc.next(); str sc.next() + sc.next() sc.next() sc.next sc sc.next() sc.next sc int val = Integer.parseInt(str); val Integer.parseInt(str) Integer.parseInt Integer str int val2 = (int)Math.sqrt(val); val2 (int)Math.sqrt(val) Math.sqrt Math val if(val == (val2 * val2)){
			System.out.println("Yes");
		} else {
			System.out.println("No");
		} val == (val2 * val2) val (val2 * val2) val2 val2 {
			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) {
		Scanner sc = new Scanner(System.in);
		String str = sc.next() + sc.next();
		int val = Integer.parseInt(str);
		int val2 = (int)Math.sqrt(val);
		if(val == (val2 * val2)){
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String str = sc.next() + sc.next();
		int val = Integer.parseInt(str);
		int val2 = (int)Math.sqrt(val);
		if(val == (val2 * val2)){
			System.out.println("Yes");
		} else {
			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 str = sc.next() + sc.next();
		int val = Integer.parseInt(str);
		int val2 = (int)Math.sqrt(val);
		if(val == (val2 * val2)){
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}
}