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 c = Integer.valueOf(a + b);
	    int d =(int) Math.floor(Math.sqrt(c));
        if(c == d * d){ 
        		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 a = sc.next();
		String b = sc.next();
		int c = Integer.valueOf(a + b);
	    int d =(int) Math.floor(Math.sqrt(c));
        if(c == d * d){ 
        		System.out.println("Yes");
        	}else {
        		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 c = Integer.valueOf(a + b);
	    int d =(int) Math.floor(Math.sqrt(c));
        if(c == d * d){ 
        		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 c = Integer.valueOf(a + b);
	    int d =(int) Math.floor(Math.sqrt(c));
        if(c == d * d){ 
        		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 c = Integer.valueOf(a + b); c Integer.valueOf(a + b) Integer.valueOf Integer a + b a b int d =(int) Math.floor(Math.sqrt(c)); d (int) Math.floor(Math.sqrt(c)) Math.floor Math Math.sqrt(c) Math.sqrt Math c if(c == d * d){ 
        		System.out.println("Yes");
        	}else {
        		System.out.println("No");
        	} c == d * d c d * d d d { 
        		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 a = sc.next();
		String b = sc.next();
		int c = Integer.valueOf(a + b);
	    int d =(int) Math.floor(Math.sqrt(c));
        if(c == d * d){ 
        		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 a = sc.next();
		String b = sc.next();
		int c = Integer.valueOf(a + b);
	    int d =(int) Math.floor(Math.sqrt(c));
        if(c == d * d){ 
        		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 a = sc.next();
		String b = sc.next();
		int c = Integer.valueOf(a + b);
	    int d =(int) Math.floor(Math.sqrt(c));
        if(c == d * d){ 
        		System.out.println("Yes");
        	}else {
        		System.out.println("No");
        	}
	}

}