import 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 k = Integer.parseInt(a+b);

    for (int i = 0; i < k; i++) {
      if (Math.pow(i,2) == k) {
        System.out.println("Yes");
        return;
      }
    }

    System.out.println("No");
    
  }

} import java.util.*; util.* java public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String a = sc.next();
    String b = sc.next();
    int k = Integer.parseInt(a+b);

    for (int i = 0; i < k; i++) {
      if (Math.pow(i,2) == k) {
        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 k = Integer.parseInt(a+b);

    for (int i = 0; i < k; i++) {
      if (Math.pow(i,2) == k) {
        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 k = Integer.parseInt(a+b);

    for (int i = 0; i < k; i++) {
      if (Math.pow(i,2) == k) {
        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 k = Integer.parseInt(a+b); k Integer.parseInt(a+b) Integer.parseInt Integer a+b a b for (int i = 0; i < k; i++) {
      if (Math.pow(i,2) == k) {
        System.out.println("Yes");
        return;
      }
    } int i = 0; int i = 0; i 0 i < k i k i++ i++ i {
      if (Math.pow(i,2) == k) {
        System.out.println("Yes");
        return;
      }
    } {
      if (Math.pow(i,2) == k) {
        System.out.println("Yes");
        return;
      }
    } if (Math.pow(i,2) == k) {
        System.out.println("Yes");
        return;
      } Math.pow(i,2) == k Math.pow(i,2) Math.pow Math i 2 k {
        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 k = Integer.parseInt(a+b);

    for (int i = 0; i < k; i++) {
      if (Math.pow(i,2) == k) {
        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 k = Integer.parseInt(a+b);

    for (int i = 0; i < k; i++) {
      if (Math.pow(i,2) == k) {
        System.out.println("Yes");
        return;
      }
    }

    System.out.println("No");
    
  }

} Main
import 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 k = Integer.parseInt(a+b);

    for (int i = 0; i < k; i++) {
      if (Math.pow(i,2) == k) {
        System.out.println("Yes");
        return;
      }
    }

    System.out.println("No");
    
  }

}
