import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        String a = sc.nextLine();
        a = a.replace(" ", "");
        int num = Integer.parseInt(a);
        int n = (int)Math.sqrt(num);
        if(n*n==num) 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.nextLine();
        a = a.replace(" ", "");
        int num = Integer.parseInt(a);
        int n = (int)Math.sqrt(num);
        if(n*n==num) 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.nextLine();
        a = a.replace(" ", "");
        int num = Integer.parseInt(a);
        int n = (int)Math.sqrt(num);
        if(n*n==num) System.out.println("Yes");
        else System.out.println("No");
    } main {
        Scanner sc = new Scanner(System.in);
        String a = sc.nextLine();
        a = a.replace(" ", "");
        int num = Integer.parseInt(a);
        int n = (int)Math.sqrt(num);
        if(n*n==num) System.out.println("Yes");
        else System.out.println("No");
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String a = sc.nextLine(); a sc.nextLine() sc.nextLine sc a = a.replace(" ", "") a a.replace(" ", "") a.replace a " " "" int num = Integer.parseInt(a); num Integer.parseInt(a) Integer.parseInt Integer a int n = (int)Math.sqrt(num); n (int)Math.sqrt(num) Math.sqrt Math num if(n*n==num) System.out.println("Yes");
        else System.out.println("No"); n*n==num n*n n n num 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);
        String a = sc.nextLine();
        a = a.replace(" ", "");
        int num = Integer.parseInt(a);
        int n = (int)Math.sqrt(num);
        if(n*n==num) 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.nextLine();
        a = a.replace(" ", "");
        int num = Integer.parseInt(a);
        int n = (int)Math.sqrt(num);
        if(n*n==num) 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.nextLine();
        a = a.replace(" ", "");
        int num = Integer.parseInt(a);
        int n = (int)Math.sqrt(num);
        if(n*n==num) System.out.println("Yes");
        else System.out.println("No");
    }
}