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();

        long x = Long.parseLong(a + b);

        for (long i = 1; i < x; i++) {
            if ((i * i) == x) {
                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();

        long x = Long.parseLong(a + b);

        for (long i = 1; i < x; i++) {
            if ((i * i) == x) {
                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();

        long x = Long.parseLong(a + b);

        for (long i = 1; i < x; i++) {
            if ((i * i) == x) {
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
    } main {
        Scanner sc = new Scanner(System.in);

        String a = sc.next();
        String b = sc.next();

        long x = Long.parseLong(a + b);

        for (long i = 1; i < x; i++) {
            if ((i * i) == x) {
                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 long x = Long.parseLong(a + b); x Long.parseLong(a + b) Long.parseLong Long a + b a b for (long i = 1; i < x; i++) {
            if ((i * i) == x) {
                System.out.println("Yes");
                return;
            }
        } long i = 1; long i = 1; i 1 i < x i x i++ i++ i {
            if ((i * i) == x) {
                System.out.println("Yes");
                return;
            }
        } {
            if ((i * i) == x) {
                System.out.println("Yes");
                return;
            }
        } if ((i * i) == x) {
                System.out.println("Yes");
                return;
            } (i * i) == x (i * i) i i x {
                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();

        long x = Long.parseLong(a + b);

        for (long i = 1; i < x; i++) {
            if ((i * i) == x) {
                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();

        long x = Long.parseLong(a + b);

        for (long i = 1; i < x; i++) {
            if ((i * i) == x) {
                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();

        long x = Long.parseLong(a + b);

        for (long i = 1; i < x; i++) {
            if ((i * i) == x) {
                System.out.println("Yes");
                return;
            }
        }
        System.out.println("No");
    }
}
