
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 keta = 1;
		while(b / (int) Math.pow(10, keta) != 0)
			keta++;
		int wa = (int) (a * Math.pow(10, keta) + b);
		double ans = (int) Math.sqrt(wa);
		if(ans == Math.sqrt(wa)) {
			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 keta = 1;
		while(b / (int) Math.pow(10, keta) != 0)
			keta++;
		int wa = (int) (a * Math.pow(10, keta) + b);
		double ans = (int) Math.sqrt(wa);
		if(ans == Math.sqrt(wa)) {
			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 keta = 1;
		while(b / (int) Math.pow(10, keta) != 0)
			keta++;
		int wa = (int) (a * Math.pow(10, keta) + b);
		double ans = (int) Math.sqrt(wa);
		if(ans == Math.sqrt(wa)) {
			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 keta = 1;
		while(b / (int) Math.pow(10, keta) != 0)
			keta++;
		int wa = (int) (a * Math.pow(10, keta) + b);
		double ans = (int) Math.sqrt(wa);
		if(ans == Math.sqrt(wa)) {
			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 keta = 1; keta 1 while(b / (int) Math.pow(10, keta) != 0)
			keta++; b / (int) Math.pow(10, keta) != 0 b / (int) Math.pow(10, keta) b (int) Math.pow(10, keta) Math.pow Math 10 keta 0 keta++ keta int wa = (int) (a * Math.pow(10, keta) + b); wa (int) (a * Math.pow(10, keta) + b) a * Math.pow(10, keta) a Math.pow(10, keta) Math.pow Math 10 keta b double ans = (int) Math.sqrt(wa); ans (int) Math.sqrt(wa) Math.sqrt Math wa if(ans == Math.sqrt(wa)) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		} ans == Math.sqrt(wa) ans Math.sqrt(wa) Math.sqrt Math wa {
			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);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int keta = 1;
		while(b / (int) Math.pow(10, keta) != 0)
			keta++;
		int wa = (int) (a * Math.pow(10, keta) + b);
		double ans = (int) Math.sqrt(wa);
		if(ans == Math.sqrt(wa)) {
			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 keta = 1;
		while(b / (int) Math.pow(10, keta) != 0)
			keta++;
		int wa = (int) (a * Math.pow(10, keta) + b);
		double ans = (int) Math.sqrt(wa);
		if(ans == Math.sqrt(wa)) {
			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 keta = 1;
		while(b / (int) Math.pow(10, keta) != 0)
			keta++;
		int wa = (int) (a * Math.pow(10, keta) + b);
		double ans = (int) Math.sqrt(wa);
		if(ans == Math.sqrt(wa)) {
			System.out.println("Yes");
		} else {
			System.out.println("No");
		}
	}

}
