import java.util.Scanner;
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 num = Integer.parseInt(s);
    for(int i = 1; i < 1000; i++){
      int result = (int) Math.pow(i,2);
      if(result == num){
        System.out.println("Yes");
        return;
      }
    }
    System.out.println("No");
  }
} import java.util.Scanner; Scanner 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 num = Integer.parseInt(s);
    for(int i = 1; i < 1000; i++){
      int result = (int) Math.pow(i,2);
      if(result == num){
        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();
    String s = a+b;
    int num = Integer.parseInt(s);
    for(int i = 1; i < 1000; i++){
      int result = (int) Math.pow(i,2);
      if(result == num){
        System.out.println("Yes");
        return;
      }
    }
    System.out.println("No");
  } main {
    Scanner sc = new Scanner(System.in);
    String a = sc.next();
    String b = sc.next();
    String s = a+b;
    int num = Integer.parseInt(s);
    for(int i = 1; i < 1000; i++){
      int result = (int) Math.pow(i,2);
      if(result == num){
        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 String s = a+b; s a+b a b int num = Integer.parseInt(s); num Integer.parseInt(s) Integer.parseInt Integer s for(int i = 1; i < 1000; i++){
      int result = (int) Math.pow(i,2);
      if(result == num){
        System.out.println("Yes");
        return;
      }
    } int i = 1; int i = 1; i 1 i < 1000 i 1000 i++ i++ i {
      int result = (int) Math.pow(i,2);
      if(result == num){
        System.out.println("Yes");
        return;
      }
    } {
      int result = (int) Math.pow(i,2);
      if(result == num){
        System.out.println("Yes");
        return;
      }
    } int result = (int) Math.pow(i,2); result (int) Math.pow(i,2) Math.pow Math i 2 if(result == num){
        System.out.println("Yes");
        return;
      } result == num result num {
        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();
    String s = a+b;
    int num = Integer.parseInt(s);
    for(int i = 1; i < 1000; i++){
      int result = (int) Math.pow(i,2);
      if(result == num){
        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();
    String s = a+b;
    int num = Integer.parseInt(s);
    for(int i = 1; i < 1000; i++){
      int result = (int) Math.pow(i,2);
      if(result == num){
        System.out.println("Yes");
        return;
      }
    }
    System.out.println("No");
  }
} Main
import java.util.Scanner;
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 num = Integer.parseInt(s);
    for(int i = 1; i < 1000; i++){
      int result = (int) Math.pow(i,2);
      if(result == num){
        System.out.println("Yes");
        return;
      }
    }
    System.out.println("No");
  }
}