import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        String ans = a + b;
        Integer ansInt = Integer.parseInt(ans);

        double sqrt = Math.sqrt(ansInt);

        if((int)sqrt*sqrt == ansInt){
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
} import java.util.HashSet; HashSet java.util import java.util.Scanner; Scanner java.util import java.util.Set; Set 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();

        String ans = a + b;
        Integer ansInt = Integer.parseInt(ans);

        double sqrt = Math.sqrt(ansInt);

        if((int)sqrt*sqrt == ansInt){
            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();

        String ans = a + b;
        Integer ansInt = Integer.parseInt(ans);

        double sqrt = Math.sqrt(ansInt);

        if((int)sqrt*sqrt == ansInt){
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    } main {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        String ans = a + b;
        Integer ansInt = Integer.parseInt(ans);

        double sqrt = Math.sqrt(ansInt);

        if((int)sqrt*sqrt == ansInt){
            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 String ans = a + b; ans a + b a b Integer ansInt = Integer.parseInt(ans); ansInt Integer.parseInt(ans) Integer.parseInt Integer ans double sqrt = Math.sqrt(ansInt); sqrt Math.sqrt(ansInt) Math.sqrt Math ansInt if((int)sqrt*sqrt == ansInt){
            System.out.println("Yes");
        } else {
            System.out.println("No");
        } (int)sqrt*sqrt == ansInt (int)sqrt*sqrt (int)sqrt sqrt ansInt {
            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();

        String ans = a + b;
        Integer ansInt = Integer.parseInt(ans);

        double sqrt = Math.sqrt(ansInt);

        if((int)sqrt*sqrt == ansInt){
            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();

        String ans = a + b;
        Integer ansInt = Integer.parseInt(ans);

        double sqrt = Math.sqrt(ansInt);

        if((int)sqrt*sqrt == ansInt){
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
} Main
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        String ans = a + b;
        Integer ansInt = Integer.parseInt(ans);

        double sqrt = Math.sqrt(ansInt);

        if((int)sqrt*sqrt == ansInt){
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
}
