 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();
        double sqrt = Math.sqrt(Double.parseDouble(a+b));

        if (sqrt % 1 == 0) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
        sc.close();
    }
} 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();
        double sqrt = Math.sqrt(Double.parseDouble(a+b));

        if (sqrt % 1 == 0) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
        sc.close();
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        double sqrt = Math.sqrt(Double.parseDouble(a+b));

        if (sqrt % 1 == 0) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
        sc.close();
    } main {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        double sqrt = Math.sqrt(Double.parseDouble(a+b));

        if (sqrt % 1 == 0) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
        sc.close();
    } 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 double sqrt = Math.sqrt(Double.parseDouble(a+b)); sqrt Math.sqrt(Double.parseDouble(a+b)) Math.sqrt Math Double.parseDouble(a+b) Double.parseDouble Double a+b a b if (sqrt % 1 == 0) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        } sqrt % 1 == 0 sqrt % 1 sqrt 1 0 {
            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" sc.close() sc.close sc 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();
        double sqrt = Math.sqrt(Double.parseDouble(a+b));

        if (sqrt % 1 == 0) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
        sc.close();
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        double sqrt = Math.sqrt(Double.parseDouble(a+b));

        if (sqrt % 1 == 0) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
        sc.close();
    }
} 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();
        double sqrt = Math.sqrt(Double.parseDouble(a+b));

        if (sqrt % 1 == 0) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
        sc.close();
    }
}