import java.util.*;

class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        
        String input = Integer.toString(a) + Integer.toString(b);
        int value = Integer.parseInt(input);
        double sqrt = Math.floor(Math.sqrt(value));
        
        if(value == Math.pow(sqrt, 2)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
} import java.util.*; util.* java class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        
        String input = Integer.toString(a) + Integer.toString(b);
        int value = Integer.parseInt(input);
        double sqrt = Math.floor(Math.sqrt(value));
        
        if(value == Math.pow(sqrt, 2)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
} Main public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        
        String input = Integer.toString(a) + Integer.toString(b);
        int value = Integer.parseInt(input);
        double sqrt = Math.floor(Math.sqrt(value));
        
        if(value == Math.pow(sqrt, 2)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    } main {
        Scanner sc = new Scanner(System.in);
        
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        
        String input = Integer.toString(a) + Integer.toString(b);
        int value = Integer.parseInt(input);
        double sqrt = Math.floor(Math.sqrt(value));
        
        if(value == Math.pow(sqrt, 2)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = Integer.parseInt(sc.next()); a Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int b = Integer.parseInt(sc.next()); b Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc String input = Integer.toString(a) + Integer.toString(b); input Integer.toString(a) + Integer.toString(b) Integer.toString(a) Integer.toString Integer a Integer.toString(b) Integer.toString Integer b int value = Integer.parseInt(input); value Integer.parseInt(input) Integer.parseInt Integer input double sqrt = Math.floor(Math.sqrt(value)); sqrt Math.floor(Math.sqrt(value)) Math.floor Math Math.sqrt(value) Math.sqrt Math value if(value == Math.pow(sqrt, 2)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        } value == Math.pow(sqrt, 2) value Math.pow(sqrt, 2) Math.pow Math sqrt 2 {
            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
import java.util.*;

class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        
        String input = Integer.toString(a) + Integer.toString(b);
        int value = Integer.parseInt(input);
        double sqrt = Math.floor(Math.sqrt(value));
        
        if(value == Math.pow(sqrt, 2)){
            System.out.println("Yes");
        }else{
            System.out.println("No");
        }
    }
}