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();
    String s = a + b;
    int ab = new Integer(s).intValue();
    double k = Math.sqrt(ab);
    int l = (int)Math.sqrt(ab);
    if(k == l){
      System.out.println("Yes");
    }else{
      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();
    String s = a + b;
    int ab = new Integer(s).intValue();
    double k = Math.sqrt(ab);
    int l = (int)Math.sqrt(ab);
    if(k == l){
      System.out.println("Yes");
    }else{
      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();
    String s = a + b;
    int ab = new Integer(s).intValue();
    double k = Math.sqrt(ab);
    int l = (int)Math.sqrt(ab);
    if(k == l){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
  } main {
    Scanner sc = new Scanner(System.in);
    String a = sc.next();
    String b = sc.next();
    String s = a + b;
    int ab = new Integer(s).intValue();
    double k = Math.sqrt(ab);
    int l = (int)Math.sqrt(ab);
    if(k == l){
      System.out.println("Yes");
    }else{
      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 String s = a + b; s a + b a b int ab = new Integer(s).intValue(); ab new Integer(s).intValue() new Integer(s).intValue new Integer(s) double k = Math.sqrt(ab); k Math.sqrt(ab) Math.sqrt Math ab int l = (int)Math.sqrt(ab); l (int)Math.sqrt(ab) Math.sqrt Math ab if(k == l){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    } k == l k l {
      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 a = sc.next();
    String b = sc.next();
    String s = a + b;
    int ab = new Integer(s).intValue();
    double k = Math.sqrt(ab);
    int l = (int)Math.sqrt(ab);
    if(k == l){
      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 a = sc.next();
    String b = sc.next();
    String s = a + b;
    int ab = new Integer(s).intValue();
    double k = Math.sqrt(ab);
    int l = (int)Math.sqrt(ab);
    if(k == l){
      System.out.println("Yes");
    }else{
      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();
    String s = a + b;
    int ab = new Integer(s).intValue();
    double k = Math.sqrt(ab);
    int l = (int)Math.sqrt(ab);
    if(k == l){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
  }
}