import java.util.*;
import java.math.RoundingMode;
import java.math.BigDecimal;
 
 
 
public class Main{
	 public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b= sc.next();
		String s = a+b;
		int val = Integer.parseInt(s);
		if((int)Math.sqrt(val)*(int)Math.sqrt(val)==val) {
			System.out.println("Yes");
		}
		else System.out.println("No");
	 }
} import java.util.*; util.* java import java.math.RoundingMode; RoundingMode java.math import java.math.BigDecimal; BigDecimal java.math public class Main{
	 public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b= sc.next();
		String s = a+b;
		int val = Integer.parseInt(s);
		if((int)Math.sqrt(val)*(int)Math.sqrt(val)==val) {
			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();
		String s = a+b;
		int val = Integer.parseInt(s);
		if((int)Math.sqrt(val)*(int)Math.sqrt(val)==val) {
			System.out.println("Yes");
		}
		else System.out.println("No");
	 } main {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b= sc.next();
		String s = a+b;
		int val = Integer.parseInt(s);
		if((int)Math.sqrt(val)*(int)Math.sqrt(val)==val) {
			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 String s = a+b; s a+b a b int val = Integer.parseInt(s); val Integer.parseInt(s) Integer.parseInt Integer s if((int)Math.sqrt(val)*(int)Math.sqrt(val)==val) {
			System.out.println("Yes");
		}
		else System.out.println("No"); (int)Math.sqrt(val)*(int)Math.sqrt(val)==val (int)Math.sqrt(val)*(int)Math.sqrt(val) (int)Math.sqrt(val) Math.sqrt Math val (int)Math.sqrt(val) Math.sqrt Math val val {
			System.out.println("Yes");
		} System.out.println("Yes") System.out.println System.out System System.out "Yes" 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();
		String s = a+b;
		int val = Integer.parseInt(s);
		if((int)Math.sqrt(val)*(int)Math.sqrt(val)==val) {
			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();
		String s = a+b;
		int val = Integer.parseInt(s);
		if((int)Math.sqrt(val)*(int)Math.sqrt(val)==val) {
			System.out.println("Yes");
		}
		else System.out.println("No");
	 }
} Main
import java.util.*;
import java.math.RoundingMode;
import java.math.BigDecimal;
 
 
 
public class Main{
	 public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b= sc.next();
		String s = a+b;
		int val = Integer.parseInt(s);
		if((int)Math.sqrt(val)*(int)Math.sqrt(val)==val) {
			System.out.println("Yes");
		}
		else System.out.println("No");
	 }
}