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();
    a = a + b;
    int n = Integer.parseInt(a);
    for(int i = 1;i<=1000;i++){
      if(n == i*i){
        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();
    a = a + b;
    int n = Integer.parseInt(a);
    for(int i = 1;i<=1000;i++){
      if(n == i*i){
        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();
    a = a + b;
    int n = Integer.parseInt(a);
    for(int i = 1;i<=1000;i++){
      if(n == i*i){
        System.out.println("Yes");
        return;
      }
    }
    System.out.println("No");
  } main {
    Scanner sc = new Scanner(System.in);
    String a = sc.next();
    String b = sc.next();
    a = a + b;
    int n = Integer.parseInt(a);
    for(int i = 1;i<=1000;i++){
      if(n == i*i){
        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 a = a + b a a + b a b int n = Integer.parseInt(a); n Integer.parseInt(a) Integer.parseInt Integer a for(int i = 1;i<=1000;i++){
      if(n == i*i){
        System.out.println("Yes");
        return;
      }
    } int i = 1; int i = 1; i 1 i<=1000 i 1000 i++ i++ i {
      if(n == i*i){
        System.out.println("Yes");
        return;
      }
    } {
      if(n == i*i){
        System.out.println("Yes");
        return;
      }
    } if(n == i*i){
        System.out.println("Yes");
        return;
      } n == i*i n i*i i i {
        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();
    a = a + b;
    int n = Integer.parseInt(a);
    for(int i = 1;i<=1000;i++){
      if(n == i*i){
        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();
    a = a + b;
    int n = Integer.parseInt(a);
    for(int i = 1;i<=1000;i++){
      if(n == i*i){
        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();
    a = a + b;
    int n = Integer.parseInt(a);
    for(int i = 1;i<=1000;i++){
      if(n == i*i){
        System.out.println("Yes");
        return;
      }
    }
    System.out.println("No");
  }
}
