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();
        
        for(int i = 1; i <= 317; i++){
            if(i*i == Long.parseLong(a+b)){
                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();
        
        for(int i = 1; i <= 317; i++){
            if(i*i == Long.parseLong(a+b)){
                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();
        
        for(int i = 1; i <= 317; i++){
            if(i*i == Long.parseLong(a+b)){
                System.out.println("Yes");
                return;
            }
        }
        
        System.out.println("No");
    } main {
        Scanner sc = new Scanner(System.in);
        
        String a = sc.next();
        String b = sc.next();
        
        for(int i = 1; i <= 317; i++){
            if(i*i == Long.parseLong(a+b)){
                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 for(int i = 1; i <= 317; i++){
            if(i*i == Long.parseLong(a+b)){
                System.out.println("Yes");
                return;
            }
        } int i = 1; int i = 1; i 1 i <= 317 i 317 i++ i++ i {
            if(i*i == Long.parseLong(a+b)){
                System.out.println("Yes");
                return;
            }
        } {
            if(i*i == Long.parseLong(a+b)){
                System.out.println("Yes");
                return;
            }
        } if(i*i == Long.parseLong(a+b)){
                System.out.println("Yes");
                return;
            } i*i == Long.parseLong(a+b) i*i i i Long.parseLong(a+b) Long.parseLong Long a+b a b {
                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();
        
        for(int i = 1; i <= 317; i++){
            if(i*i == Long.parseLong(a+b)){
                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();
        
        for(int i = 1; i <= 317; i++){
            if(i*i == Long.parseLong(a+b)){
                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();
        
        for(int i = 1; i <= 317; i++){
            if(i*i == Long.parseLong(a+b)){
                System.out.println("Yes");
                return;
            }
        }
        
        System.out.println("No");
    }
}
