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();
		int c=Integer.parseInt(a+b);
		for(int i=0;i*i<=c;i++) {
			if(i*i==c) {
				System.out.println("Yes");
				System.exit(0);
			}
		}
		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();
		int c=Integer.parseInt(a+b);
		for(int i=0;i*i<=c;i++) {
			if(i*i==c) {
				System.out.println("Yes");
				System.exit(0);
			}
		}
		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();
		int c=Integer.parseInt(a+b);
		for(int i=0;i*i<=c;i++) {
			if(i*i==c) {
				System.out.println("Yes");
				System.exit(0);
			}
		}
		System.out.println("No");
	} main {
		Scanner sc=new Scanner(System.in);
		String a=sc.next();
		String b=sc.next();
		int c=Integer.parseInt(a+b);
		for(int i=0;i*i<=c;i++) {
			if(i*i==c) {
				System.out.println("Yes");
				System.exit(0);
			}
		}
		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 c=Integer.parseInt(a+b); c Integer.parseInt(a+b) Integer.parseInt Integer a+b a b for(int i=0;i*i<=c;i++) {
			if(i*i==c) {
				System.out.println("Yes");
				System.exit(0);
			}
		} int i=0; int i=0; i 0 i*i<=c i*i i i c i++ i++ i {
			if(i*i==c) {
				System.out.println("Yes");
				System.exit(0);
			}
		} {
			if(i*i==c) {
				System.out.println("Yes");
				System.exit(0);
			}
		} if(i*i==c) {
				System.out.println("Yes");
				System.exit(0);
			} i*i==c i*i i i c {
				System.out.println("Yes");
				System.exit(0);
			} System.out.println("Yes") System.out.println System.out System System.out "Yes" System.exit(0) System.exit System 0 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();
		int c=Integer.parseInt(a+b);
		for(int i=0;i*i<=c;i++) {
			if(i*i==c) {
				System.out.println("Yes");
				System.exit(0);
			}
		}
		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();
		int c=Integer.parseInt(a+b);
		for(int i=0;i*i<=c;i++) {
			if(i*i==c) {
				System.out.println("Yes");
				System.exit(0);
			}
		}
		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();
		int c=Integer.parseInt(a+b);
		for(int i=0;i*i<=c;i++) {
			if(i*i==c) {
				System.out.println("Yes");
				System.exit(0);
			}
		}
		System.out.println("No");
	}
}