import 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 num = Integer.parseInt(a+b);
	for(int i=1;i<400;i++){
		if(i*i==num){
			System.out.println("Yes");
		    System.exit(0);
		}
	}
	System.out.println("No");
	}
} import java.util.*; util.* java public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		 int num = Integer.parseInt(a+b);
	for(int i=1;i<400;i++){
		if(i*i==num){
			System.out.println("Yes");
		    System.exit(0);
		}
	}
	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 num = Integer.parseInt(a+b);
	for(int i=1;i<400;i++){
		if(i*i==num){
			System.out.println("Yes");
		    System.exit(0);
		}
	}
	System.out.println("No");
	} main {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		 int num = Integer.parseInt(a+b);
	for(int i=1;i<400;i++){
		if(i*i==num){
			System.out.println("Yes");
		    System.exit(0);
		}
	}
	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 num = Integer.parseInt(a+b); num Integer.parseInt(a+b) Integer.parseInt Integer a+b a b for(int i=1;i<400;i++){
		if(i*i==num){
			System.out.println("Yes");
		    System.exit(0);
		}
	} int i=1; int i=1; i 1 i<400 i 400 i++ i++ i {
		if(i*i==num){
			System.out.println("Yes");
		    System.exit(0);
		}
	} {
		if(i*i==num){
			System.out.println("Yes");
		    System.exit(0);
		}
	} if(i*i==num){
			System.out.println("Yes");
		    System.exit(0);
		} i*i==num i*i i i num {
			System.out.println("Yes");
		    System.exit(0);
		} System.out.println("Yes") System.out.println System.out System System.out "Yes" System.exit(0) System.exit System 0 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 num = Integer.parseInt(a+b);
	for(int i=1;i<400;i++){
		if(i*i==num){
			System.out.println("Yes");
		    System.exit(0);
		}
	}
	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 num = Integer.parseInt(a+b);
	for(int i=1;i<400;i++){
		if(i*i==num){
			System.out.println("Yes");
		    System.exit(0);
		}
	}
	System.out.println("No");
	}
} Main
import 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 num = Integer.parseInt(a+b);
	for(int i=1;i<400;i++){
		if(i*i==num){
			System.out.println("Yes");
		    System.exit(0);
		}
	}
	System.out.println("No");
	}
}
