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;
    final int S=Integer.parseInt(s);
    double d=Math.sqrt(S);
    int i=(int)d;
    if(i*i==S){
      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;
    final int S=Integer.parseInt(s);
    double d=Math.sqrt(S);
    int i=(int)d;
    if(i*i==S){
      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;
    final int S=Integer.parseInt(s);
    double d=Math.sqrt(S);
    int i=(int)d;
    if(i*i==S){
      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;
    final int S=Integer.parseInt(s);
    double d=Math.sqrt(S);
    int i=(int)d;
    if(i*i==S){
      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 final int S=Integer.parseInt(s); S Integer.parseInt(s) Integer.parseInt Integer s double d=Math.sqrt(S); d Math.sqrt(S) Math.sqrt Math S int i=(int)d; i (int)d if(i*i==S){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    } i*i==S i*i i i S {
      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;
    final int S=Integer.parseInt(s);
    double d=Math.sqrt(S);
    int i=(int)d;
    if(i*i==S){
      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;
    final int S=Integer.parseInt(s);
    double d=Math.sqrt(S);
    int i=(int)d;
    if(i*i==S){
      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;
    final int S=Integer.parseInt(s);
    double d=Math.sqrt(S);
    int i=(int)d;
    if(i*i==S){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
  }
}