import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str = sc.next() + sc.next();
        sc.close();
        int num = Integer.parseInt(str);

        int rt = (int) Math.sqrt(num);

        if (rt * rt == num) {
            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 str = sc.next() + sc.next();
        sc.close();
        int num = Integer.parseInt(str);

        int rt = (int) Math.sqrt(num);

        if (rt * rt == num) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str = sc.next() + sc.next();
        sc.close();
        int num = Integer.parseInt(str);

        int rt = (int) Math.sqrt(num);

        if (rt * rt == num) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

    } main {
        Scanner sc = new Scanner(System.in);
        String str = sc.next() + sc.next();
        sc.close();
        int num = Integer.parseInt(str);

        int rt = (int) Math.sqrt(num);

        if (rt * rt == num) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String str = sc.next() + sc.next(); str sc.next() + sc.next() sc.next() sc.next sc sc.next() sc.next sc sc.close() sc.close sc int num = Integer.parseInt(str); num Integer.parseInt(str) Integer.parseInt Integer str int rt = (int) Math.sqrt(num); rt (int) Math.sqrt(num) Math.sqrt Math num if (rt * rt == num) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        } rt * rt == num rt * rt rt rt num {
            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 str = sc.next() + sc.next();
        sc.close();
        int num = Integer.parseInt(str);

        int rt = (int) Math.sqrt(num);

        if (rt * rt == num) {
            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 str = sc.next() + sc.next();
        sc.close();
        int num = Integer.parseInt(str);

        int rt = (int) Math.sqrt(num);

        if (rt * rt == num) {
            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 str = sc.next() + sc.next();
        sc.close();
        int num = Integer.parseInt(str);

        int rt = (int) Math.sqrt(num);

        if (rt * rt == num) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }

    }
}
