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();
		int s = Integer.parseInt(Integer.valueOf(A).toString() + Integer.valueOf(B).toString());
		int a = (int)Math.sqrt(s);
		if (a*a==s) 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();
		int s = Integer.parseInt(Integer.valueOf(A).toString() + Integer.valueOf(B).toString());
		int a = (int)Math.sqrt(s);
		if (a*a==s) 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();
		int s = Integer.parseInt(Integer.valueOf(A).toString() + Integer.valueOf(B).toString());
		int a = (int)Math.sqrt(s);
		if (a*a==s) System.out.println("Yes");
		else System.out.println("No");
	} main {
		Scanner sc = new Scanner(System.in);
		int A = sc.nextInt();
		int B = sc.nextInt();
		int s = Integer.parseInt(Integer.valueOf(A).toString() + Integer.valueOf(B).toString());
		int a = (int)Math.sqrt(s);
		if (a*a==s) 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 int s = Integer.parseInt(Integer.valueOf(A).toString() + Integer.valueOf(B).toString()); s Integer.parseInt(Integer.valueOf(A).toString() + Integer.valueOf(B).toString()) Integer.parseInt Integer Integer.valueOf(A).toString() + Integer.valueOf(B).toString() Integer.valueOf(A).toString() Integer.valueOf(A).toString Integer.valueOf(A) Integer.valueOf Integer A Integer.valueOf(B).toString() Integer.valueOf(B).toString Integer.valueOf(B) Integer.valueOf Integer B int a = (int)Math.sqrt(s); a (int)Math.sqrt(s) Math.sqrt Math s if (a*a==s) System.out.println("Yes");
		else System.out.println("No"); a*a==s a*a a a s 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();
		int s = Integer.parseInt(Integer.valueOf(A).toString() + Integer.valueOf(B).toString());
		int a = (int)Math.sqrt(s);
		if (a*a==s) 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();
		int s = Integer.parseInt(Integer.valueOf(A).toString() + Integer.valueOf(B).toString());
		int a = (int)Math.sqrt(s);
		if (a*a==s) 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();
		int s = Integer.parseInt(Integer.valueOf(A).toString() + Integer.valueOf(B).toString());
		int a = (int)Math.sqrt(s);
		if (a*a==s) System.out.println("Yes");
		else System.out.println("No");
	}
}
