import java.util.Scanner;
//import java.util.Arrays;
public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int num = Integer.parseInt(a+b);
		boolean flg = false;
		for(int i = 1; i < num ; i++){
			if(i * i == num){
				flg = true;
				break;
			}
		}
		System.out.println(flg ? "Yes" : "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();
		String b = sc.next();
		int num = Integer.parseInt(a+b);
		boolean flg = false;
		for(int i = 1; i < num ; i++){
			if(i * i == num){
				flg = true;
				break;
			}
		}
		System.out.println(flg ? "Yes" : "No");
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int num = Integer.parseInt(a+b);
		boolean flg = false;
		for(int i = 1; i < num ; i++){
			if(i * i == num){
				flg = true;
				break;
			}
		}
		System.out.println(flg ? "Yes" : "No");
	} main {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int num = Integer.parseInt(a+b);
		boolean flg = false;
		for(int i = 1; i < num ; i++){
			if(i * i == num){
				flg = true;
				break;
			}
		}
		System.out.println(flg ? "Yes" : "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 int num = Integer.parseInt(a+b); num Integer.parseInt(a+b) Integer.parseInt Integer a+b a b boolean flg = false; flg false for(int i = 1; i < num ; i++){
			if(i * i == num){
				flg = true;
				break;
			}
		} int i = 1; int i = 1; i 1 i < num i num i++ i++ i {
			if(i * i == num){
				flg = true;
				break;
			}
		} {
			if(i * i == num){
				flg = true;
				break;
			}
		} if(i * i == num){
				flg = true;
				break;
			} i * i == num i * i i i num {
				flg = true;
				break;
			} flg = true flg true break; System.out.println(flg ? "Yes" : "No") System.out.println System.out System System.out flg ? "Yes" : "No" flg "Yes" "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();
		int num = Integer.parseInt(a+b);
		boolean flg = false;
		for(int i = 1; i < num ; i++){
			if(i * i == num){
				flg = true;
				break;
			}
		}
		System.out.println(flg ? "Yes" : "No");
	}
} public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int num = Integer.parseInt(a+b);
		boolean flg = false;
		for(int i = 1; i < num ; i++){
			if(i * i == num){
				flg = true;
				break;
			}
		}
		System.out.println(flg ? "Yes" : "No");
	}
} Main
import java.util.Scanner;
//import java.util.Arrays;
public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int num = Integer.parseInt(a+b);
		boolean flg = false;
		for(int i = 1; i < num ; i++){
			if(i * i == num){
				flg = true;
				break;
			}
		}
		System.out.println(flg ? "Yes" : "No");
	}
}
