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 sq = Integer.parseInt(a.concat(b));
		for (int i = 2; i < sq / 2; i++) {
			if (i * i == sq) {
				System.out.println("Yes");
				return;
			}
		}
		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 sq = Integer.parseInt(a.concat(b));
		for (int i = 2; i < sq / 2; i++) {
			if (i * i == sq) {
				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();
		int sq = Integer.parseInt(a.concat(b));
		for (int i = 2; i < sq / 2; i++) {
			if (i * i == sq) {
				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 sq = Integer.parseInt(a.concat(b));
		for (int i = 2; i < sq / 2; i++) {
			if (i * i == sq) {
				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 sq = Integer.parseInt(a.concat(b)); sq Integer.parseInt(a.concat(b)) Integer.parseInt Integer a.concat(b) a.concat a b for (int i = 2; i < sq / 2; i++) {
			if (i * i == sq) {
				System.out.println("Yes");
				return;
			}
		} int i = 2; int i = 2; i 2 i < sq / 2 i sq / 2 sq 2 i++ i++ i {
			if (i * i == sq) {
				System.out.println("Yes");
				return;
			}
		} {
			if (i * i == sq) {
				System.out.println("Yes");
				return;
			}
		} if (i * i == sq) {
				System.out.println("Yes");
				return;
			} i * i == sq i * i i i sq {
				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();
		int sq = Integer.parseInt(a.concat(b));
		for (int i = 2; i < sq / 2; i++) {
			if (i * i == sq) {
				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();
		int sq = Integer.parseInt(a.concat(b));
		for (int i = 2; i < sq / 2; i++) {
			if (i * i == sq) {
				System.out.println("Yes");
				return;
			}
		}
		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 sq = Integer.parseInt(a.concat(b));
		for (int i = 2; i < sq / 2; i++) {
			if (i * i == sq) {
				System.out.println("Yes");
				return;
			}
		}
		System.out.println("No");
	}

}