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 n = Integer.parseInt(a + b);
        int sr = (int)Math.sqrt(n);
        if (sr * sr == n) {
            System.out.println("Yes");
            return;
        }
        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 n = Integer.parseInt(a + b);
        int sr = (int)Math.sqrt(n);
        if (sr * sr == n) {
            System.out.println("Yes");
            return;
        }
        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 n = Integer.parseInt(a + b);
        int sr = (int)Math.sqrt(n);
        if (sr * sr == n) {
            System.out.println("Yes");
            return;
        }
        System.out.println("No");
    } main {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        int n = Integer.parseInt(a + b);
        int sr = (int)Math.sqrt(n);
        if (sr * sr == n) {
            System.out.println("Yes");
            return;
        }
        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 n = Integer.parseInt(a + b); n Integer.parseInt(a + b) Integer.parseInt Integer a + b a b int sr = (int)Math.sqrt(n); sr (int)Math.sqrt(n) Math.sqrt Math n if (sr * sr == n) {
            System.out.println("Yes");
            return;
        } sr * sr == n sr * sr sr sr n {
            System.out.println("Yes");
            return;
        } System.out.println("Yes") System.out.println System.out System System.out "Yes" return; 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 n = Integer.parseInt(a + b);
        int sr = (int)Math.sqrt(n);
        if (sr * sr == n) {
            System.out.println("Yes");
            return;
        }
        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 n = Integer.parseInt(a + b);
        int sr = (int)Math.sqrt(n);
        if (sr * sr == n) {
            System.out.println("Yes");
            return;
        }
        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 n = Integer.parseInt(a + b);
        int sr = (int)Math.sqrt(n);
        if (sr * sr == n) {
            System.out.println("Yes");
            return;
        }
        System.out.println("No");
    }
}