import java.util.Scanner;

public class Main {
    /**
     * 1 21
     * @param 1 ≤ a,b ≤ 100
     */
    public static void main(String...args) {
        try (Scanner sc = new Scanner(System.in)) {
            String a = sc.next();
            String b = sc.next();
            int ab = Integer.parseInt(a + b);

            int tmp = (int)Math.sqrt(ab);
            if (Math.pow(tmp, 2) == ab) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        }
    }
} import java.util.Scanner; Scanner java.util public class Main {
    /**
     * 1 21
     * @param 1 ≤ a,b ≤ 100
     */
    public static void main(String...args) {
        try (Scanner sc = new Scanner(System.in)) {
            String a = sc.next();
            String b = sc.next();
            int ab = Integer.parseInt(a + b);

            int tmp = (int)Math.sqrt(ab);
            if (Math.pow(tmp, 2) == ab) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        }
    }
} Main /**
     * 1 21
     * @param 1 ≤ a,b ≤ 100
     */
    public static void main(String...args) {
        try (Scanner sc = new Scanner(System.in)) {
            String a = sc.next();
            String b = sc.next();
            int ab = Integer.parseInt(a + b);

            int tmp = (int)Math.sqrt(ab);
            if (Math.pow(tmp, 2) == ab) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        }
    } main {
        try (Scanner sc = new Scanner(System.in)) {
            String a = sc.next();
            String b = sc.next();
            int ab = Integer.parseInt(a + b);

            int tmp = (int)Math.sqrt(ab);
            if (Math.pow(tmp, 2) == ab) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        }
    } try (Scanner sc = new Scanner(System.in)) {
            String a = sc.next();
            String b = sc.next();
            int ab = Integer.parseInt(a + b);

            int tmp = (int)Math.sqrt(ab);
            if (Math.pow(tmp, 2) == ab) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        } {
            String a = sc.next();
            String b = sc.next();
            int ab = Integer.parseInt(a + b);

            int tmp = (int)Math.sqrt(ab);
            if (Math.pow(tmp, 2) == ab) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        } Scanner sc = new Scanner(System.in) Scanner sc = new Scanner(System.in) 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 ab = Integer.parseInt(a + b); ab Integer.parseInt(a + b) Integer.parseInt Integer a + b a b int tmp = (int)Math.sqrt(ab); tmp (int)Math.sqrt(ab) Math.sqrt Math ab if (Math.pow(tmp, 2) == ab) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            } Math.pow(tmp, 2) == ab Math.pow(tmp, 2) Math.pow Math tmp 2 ab {
                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 {
    /**
     * 1 21
     * @param 1 ≤ a,b ≤ 100
     */
    public static void main(String...args) {
        try (Scanner sc = new Scanner(System.in)) {
            String a = sc.next();
            String b = sc.next();
            int ab = Integer.parseInt(a + b);

            int tmp = (int)Math.sqrt(ab);
            if (Math.pow(tmp, 2) == ab) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        }
    }
} public class Main {
    /**
     * 1 21
     * @param 1 ≤ a,b ≤ 100
     */
    public static void main(String...args) {
        try (Scanner sc = new Scanner(System.in)) {
            String a = sc.next();
            String b = sc.next();
            int ab = Integer.parseInt(a + b);

            int tmp = (int)Math.sqrt(ab);
            if (Math.pow(tmp, 2) == ab) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        }
    }
} Main
import java.util.Scanner;

public class Main {
    /**
     * 1 21
     * @param 1 ≤ a,b ≤ 100
     */
    public static void main(String...args) {
        try (Scanner sc = new Scanner(System.in)) {
            String a = sc.next();
            String b = sc.next();
            int ab = Integer.parseInt(a + b);

            int tmp = (int)Math.sqrt(ab);
            if (Math.pow(tmp, 2) == ab) {
                System.out.println("Yes");
            } else {
                System.out.println("No");
            }
        }
    }
}