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();
        String s = a + b ;
        int n = Integer.valueOf(a + b);
        if (n == Math.floor(Math.sqrt(n)) * Math.floor(Math.sqrt(n))) {
            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();
        String s = a + b ;
        int n = Integer.valueOf(a + b);
        if (n == Math.floor(Math.sqrt(n)) * Math.floor(Math.sqrt(n))) {
            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 s = a + b ;
        int n = Integer.valueOf(a + b);
        if (n == Math.floor(Math.sqrt(n)) * Math.floor(Math.sqrt(n))) {
            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 s = a + b ;
        int n = Integer.valueOf(a + b);
        if (n == Math.floor(Math.sqrt(n)) * Math.floor(Math.sqrt(n))) {
            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 s = a + b ; s a + b a b int n = Integer.valueOf(a + b); n Integer.valueOf(a + b) Integer.valueOf Integer a + b a b if (n == Math.floor(Math.sqrt(n)) * Math.floor(Math.sqrt(n))) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        } n == Math.floor(Math.sqrt(n)) * Math.floor(Math.sqrt(n)) n Math.floor(Math.sqrt(n)) * Math.floor(Math.sqrt(n)) Math.floor(Math.sqrt(n)) Math.floor Math Math.sqrt(n) Math.sqrt Math n Math.floor(Math.sqrt(n)) Math.floor Math Math.sqrt(n) Math.sqrt Math n {
            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 s = a + b ;
        int n = Integer.valueOf(a + b);
        if (n == Math.floor(Math.sqrt(n)) * Math.floor(Math.sqrt(n))) {
            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 s = a + b ;
        int n = Integer.valueOf(a + b);
        if (n == Math.floor(Math.sqrt(n)) * Math.floor(Math.sqrt(n))) {
            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();
        String s = a + b ;
        int n = Integer.valueOf(a + b);
        if (n == Math.floor(Math.sqrt(n)) * Math.floor(Math.sqrt(n))) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }

}