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);

        double sqrt = Math.sqrt(num);
        int sqrtInt = (int) sqrt;
        if (sqrt % sqrtInt == 0) {
            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 num = Integer.parseInt(a + b);

        double sqrt = Math.sqrt(num);
        int sqrtInt = (int) sqrt;
        if (sqrt % sqrtInt == 0) {
            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 num = Integer.parseInt(a + b);

        double sqrt = Math.sqrt(num);
        int sqrtInt = (int) sqrt;
        if (sqrt % sqrtInt == 0) {
            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 num = Integer.parseInt(a + b);

        double sqrt = Math.sqrt(num);
        int sqrtInt = (int) sqrt;
        if (sqrt % sqrtInt == 0) {
            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 num = Integer.parseInt(a + b); num Integer.parseInt(a + b) Integer.parseInt Integer a + b a b double sqrt = Math.sqrt(num); sqrt Math.sqrt(num) Math.sqrt Math num int sqrtInt = (int) sqrt; sqrtInt (int) sqrt if (sqrt % sqrtInt == 0) {
            System.out.println("Yes");
            return;
        } sqrt % sqrtInt == 0 sqrt % sqrtInt sqrt sqrtInt 0 {
            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 num = Integer.parseInt(a + b);

        double sqrt = Math.sqrt(num);
        int sqrtInt = (int) sqrt;
        if (sqrt % sqrtInt == 0) {
            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 num = Integer.parseInt(a + b);

        double sqrt = Math.sqrt(num);
        int sqrtInt = (int) sqrt;
        if (sqrt % sqrtInt == 0) {
            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 num = Integer.parseInt(a + b);

        double sqrt = Math.sqrt(num);
        int sqrtInt = (int) sqrt;
        if (sqrt % sqrtInt == 0) {
            System.out.println("Yes");
            return;
        }
        System.out.println("No");
    }

}
