import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String a=sc.next(),b=sc.next();
		String c= new StringBuilder().append(a).append(b).toString();
		double num = (double)Integer.valueOf(c);

		double sqrtnum=Math.sqrt(num);
		if(Math.floor(sqrtnum)==sqrtnum) {
			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(),b=sc.next();
		String c= new StringBuilder().append(a).append(b).toString();
		double num = (double)Integer.valueOf(c);

		double sqrtnum=Math.sqrt(num);
		if(Math.floor(sqrtnum)==sqrtnum) {
			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(),b=sc.next();
		String c= new StringBuilder().append(a).append(b).toString();
		double num = (double)Integer.valueOf(c);

		double sqrtnum=Math.sqrt(num);
		if(Math.floor(sqrtnum)==sqrtnum) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}

	} main {
		Scanner sc = new Scanner(System.in);
		String a=sc.next(),b=sc.next();
		String c= new StringBuilder().append(a).append(b).toString();
		double num = (double)Integer.valueOf(c);

		double sqrtnum=Math.sqrt(num);
		if(Math.floor(sqrtnum)==sqrtnum) {
			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 b=sc.next(); b sc.next() sc.next sc String c= new StringBuilder().append(a).append(b).toString(); c new StringBuilder().append(a).append(b).toString() new StringBuilder().append(a).append(b).toString new StringBuilder().append(a).append(b) new StringBuilder().append(a).append new StringBuilder().append(a) new StringBuilder().append new StringBuilder() a b double num = (double)Integer.valueOf(c); num (double)Integer.valueOf(c) Integer.valueOf Integer c double sqrtnum=Math.sqrt(num); sqrtnum Math.sqrt(num) Math.sqrt Math num if(Math.floor(sqrtnum)==sqrtnum) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		} Math.floor(sqrtnum)==sqrtnum Math.floor(sqrtnum) Math.floor Math sqrtnum sqrtnum {
			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(),b=sc.next();
		String c= new StringBuilder().append(a).append(b).toString();
		double num = (double)Integer.valueOf(c);

		double sqrtnum=Math.sqrt(num);
		if(Math.floor(sqrtnum)==sqrtnum) {
			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(),b=sc.next();
		String c= new StringBuilder().append(a).append(b).toString();
		double num = (double)Integer.valueOf(c);

		double sqrtnum=Math.sqrt(num);
		if(Math.floor(sqrtnum)==sqrtnum) {
			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(),b=sc.next();
		String c= new StringBuilder().append(a).append(b).toString();
		double num = (double)Integer.valueOf(c);

		double sqrtnum=Math.sqrt(num);
		if(Math.floor(sqrtnum)==sqrtnum) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}

	}
}