import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        int num = Integer.parseInt(a+b);
        
        for(int x=1; x<=1000; x++) {
            if(x*x==num) {
                System.out.println("Yes");
                return ;
            }
        }
        System.out.println("No");
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        int num = Integer.parseInt(a+b);
        
        for(int x=1; x<=1000; x++) {
            if(x*x==num) {
                System.out.println("Yes");
                return ;
            }
        }
        System.out.println("No");
    }
} Main public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        int num = Integer.parseInt(a+b);
        
        for(int x=1; x<=1000; x++) {
            if(x*x==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();
        int num = Integer.parseInt(a+b);
        
        for(int x=1; x<=1000; x++) {
            if(x*x==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 int num = Integer.parseInt(a+b); num Integer.parseInt(a+b) Integer.parseInt Integer a+b a b for(int x=1; x<=1000; x++) {
            if(x*x==num) {
                System.out.println("Yes");
                return ;
            }
        } int x=1; int x=1; x 1 x<=1000 x 1000 x++ x++ x {
            if(x*x==num) {
                System.out.println("Yes");
                return ;
            }
        } {
            if(x*x==num) {
                System.out.println("Yes");
                return ;
            }
        } if(x*x==num) {
                System.out.println("Yes");
                return ;
            } x*x==num x*x x x 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) throws Exception {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        int num = Integer.parseInt(a+b);
        
        for(int x=1; x<=1000; x++) {
            if(x*x==num) {
                System.out.println("Yes");
                return ;
            }
        }
        System.out.println("No");
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        int num = Integer.parseInt(a+b);
        
        for(int x=1; x<=1000; x++) {
            if(x*x==num) {
                System.out.println("Yes");
                return ;
            }
        }
        System.out.println("No");
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        int num = Integer.parseInt(a+b);
        
        for(int x=1; x<=1000; x++) {
            if(x*x==num) {
                System.out.println("Yes");
                return ;
            }
        }
        System.out.println("No");
    }
}
