import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		sc.close();
		
		int num = a * (int)Math.pow(10, (int)Math.log10(b)+1) + b;
		int sqrt = (int)Math.sqrt(num);
		if(num == sqrt * sqrt)
			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);
		int a = sc.nextInt();
		int b = sc.nextInt();
		sc.close();
		
		int num = a * (int)Math.pow(10, (int)Math.log10(b)+1) + b;
		int sqrt = (int)Math.sqrt(num);
		if(num == sqrt * sqrt)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		sc.close();
		
		int num = a * (int)Math.pow(10, (int)Math.log10(b)+1) + b;
		int sqrt = (int)Math.sqrt(num);
		if(num == sqrt * sqrt)
			System.out.println("Yes");
		else
			System.out.println("No");
	} main {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		sc.close();
		
		int num = a * (int)Math.pow(10, (int)Math.log10(b)+1) + b;
		int sqrt = (int)Math.sqrt(num);
		if(num == sqrt * sqrt)
			System.out.println("Yes");
		else
			System.out.println("No");
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc sc.close() sc.close sc int num = a * (int)Math.pow(10, (int)Math.log10(b)+1) + b; num a * (int)Math.pow(10, (int)Math.log10(b)+1) + b a * (int)Math.pow(10, (int)Math.log10(b)+1) a (int)Math.pow(10, (int)Math.log10(b)+1) Math.pow Math 10 (int)Math.log10(b)+1 (int)Math.log10(b) Math.log10 Math b 1 b int sqrt = (int)Math.sqrt(num); sqrt (int)Math.sqrt(num) Math.sqrt Math num if(num == sqrt * sqrt)
			System.out.println("Yes");
		else
			System.out.println("No"); num == sqrt * sqrt num sqrt * sqrt sqrt sqrt 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);
		int a = sc.nextInt();
		int b = sc.nextInt();
		sc.close();
		
		int num = a * (int)Math.pow(10, (int)Math.log10(b)+1) + b;
		int sqrt = (int)Math.sqrt(num);
		if(num == sqrt * sqrt)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		sc.close();
		
		int num = a * (int)Math.pow(10, (int)Math.log10(b)+1) + b;
		int sqrt = (int)Math.sqrt(num);
		if(num == sqrt * sqrt)
			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);
		int a = sc.nextInt();
		int b = sc.nextInt();
		sc.close();
		
		int num = a * (int)Math.pow(10, (int)Math.log10(b)+1) + b;
		int sqrt = (int)Math.sqrt(num);
		if(num == sqrt * sqrt)
			System.out.println("Yes");
		else
			System.out.println("No");
	}
}
