import java.util.Scanner;
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 can = false;
        for(int i = 1; i*i<= num;i++){
            if(i*i == num){
                can = true;
                break;
            }
            else{
                can = false;
            }
        }
        if(can){
            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();
        String b = sc.next();
        int num = Integer.parseInt(a+b);
        boolean can = false;
        for(int i = 1; i*i<= num;i++){
            if(i*i == num){
                can = true;
                break;
            }
            else{
                can = false;
            }
        }
        if(can){
            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();
        String b = sc.next();
        int num = Integer.parseInt(a+b);
        boolean can = false;
        for(int i = 1; i*i<= num;i++){
            if(i*i == num){
                can = true;
                break;
            }
            else{
                can = false;
            }
        }
        if(can){
            System.out.println("Yes");
        }
        else{
            System.out.println("No");
        }
    } main {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        int num = Integer.parseInt(a+b);
        boolean can = false;
        for(int i = 1; i*i<= num;i++){
            if(i*i == num){
                can = true;
                break;
            }
            else{
                can = false;
            }
        }
        if(can){
            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 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 can = false; can false for(int i = 1; i*i<= num;i++){
            if(i*i == num){
                can = true;
                break;
            }
            else{
                can = false;
            }
        } int i = 1; int i = 1; i 1 i*i<= num i*i i i num i++ i++ i {
            if(i*i == num){
                can = true;
                break;
            }
            else{
                can = false;
            }
        } {
            if(i*i == num){
                can = true;
                break;
            }
            else{
                can = false;
            }
        } if(i*i == num){
                can = true;
                break;
            }
            else{
                can = false;
            } i*i == num i*i i i num {
                can = true;
                break;
            } can = true can true break; {
                can = false;
            } can = false can false if(can){
            System.out.println("Yes");
        }
        else{
            System.out.println("No");
        } can {
            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();
        String b = sc.next();
        int num = Integer.parseInt(a+b);
        boolean can = false;
        for(int i = 1; i*i<= num;i++){
            if(i*i == num){
                can = true;
                break;
            }
            else{
                can = false;
            }
        }
        if(can){
            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();
        String b = sc.next();
        int num = Integer.parseInt(a+b);
        boolean can = false;
        for(int i = 1; i*i<= num;i++){
            if(i*i == num){
                can = true;
                break;
            }
            else{
                can = false;
            }
        }
        if(can){
            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();
        String b = sc.next();
        int num = Integer.parseInt(a+b);
        boolean can = false;
        for(int i = 1; i*i<= num;i++){
            if(i*i == num){
                can = true;
                break;
            }
            else{
                can = false;
            }
        }
        if(can){
            System.out.println("Yes");
        }
        else{
            System.out.println("No");
        }
    }
}
