import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    String s = Integer.toString(a) + Integer.toString(b);
    int i = Integer.parseInt(s);
    double result = (int)Math.sqrt(i);
    if(result*result == i){
      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);
    int a = sc.nextInt();
    int b = sc.nextInt();
    String s = Integer.toString(a) + Integer.toString(b);
    int i = Integer.parseInt(s);
    double result = (int)Math.sqrt(i);
    if(result*result == i){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
  }
} Main public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    String s = Integer.toString(a) + Integer.toString(b);
    int i = Integer.parseInt(s);
    double result = (int)Math.sqrt(i);
    if(result*result == i){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
  } main {
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    String s = Integer.toString(a) + Integer.toString(b);
    int i = Integer.parseInt(s);
    double result = (int)Math.sqrt(i);
    if(result*result == i){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc String s = Integer.toString(a) + Integer.toString(b); s Integer.toString(a) + Integer.toString(b) Integer.toString(a) Integer.toString Integer a Integer.toString(b) Integer.toString Integer b int i = Integer.parseInt(s); i Integer.parseInt(s) Integer.parseInt Integer s double result = (int)Math.sqrt(i); result (int)Math.sqrt(i) Math.sqrt Math i if(result*result == i){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    } result*result == i result*result result result i {
      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);
    int a = sc.nextInt();
    int b = sc.nextInt();
    String s = Integer.toString(a) + Integer.toString(b);
    int i = Integer.parseInt(s);
    double result = (int)Math.sqrt(i);
    if(result*result == i){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
  }
} public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    String s = Integer.toString(a) + Integer.toString(b);
    int i = Integer.parseInt(s);
    double result = (int)Math.sqrt(i);
    if(result*result == i){
      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);
    int a = sc.nextInt();
    int b = sc.nextInt();
    String s = Integer.toString(a) + Integer.toString(b);
    int i = Integer.parseInt(s);
    double result = (int)Math.sqrt(i);
    if(result*result == i){
      System.out.println("Yes");
    }else{
      System.out.println("No");
    }
  }
}
