import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String a = sc.next(), b = sc.next();
		int n = Integer.parseInt(a + b);
		sc.close();

		for (int i = 1; i < 100101; i++) {
			if (i * i == n) {
				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(), b = sc.next();
		int n = Integer.parseInt(a + b);
		sc.close();

		for (int i = 1; i < 100101; i++) {
			if (i * i == n) {
				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(), b = sc.next();
		int n = Integer.parseInt(a + b);
		sc.close();

		for (int i = 1; i < 100101; i++) {
			if (i * i == n) {
				System.out.println("Yes");
				return;
			}
		}
		System.out.println("No");
	} main {
		Scanner sc = new Scanner(System.in);
		String a = sc.next(), b = sc.next();
		int n = Integer.parseInt(a + b);
		sc.close();

		for (int i = 1; i < 100101; i++) {
			if (i * i == n) {
				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 b = sc.next(); b sc.next() sc.next sc int n = Integer.parseInt(a + b); n Integer.parseInt(a + b) Integer.parseInt Integer a + b a b sc.close() sc.close sc for (int i = 1; i < 100101; i++) {
			if (i * i == n) {
				System.out.println("Yes");
				return;
			}
		} int i = 1; int i = 1; i 1 i < 100101 i 100101 i++ i++ i {
			if (i * i == n) {
				System.out.println("Yes");
				return;
			}
		} {
			if (i * i == n) {
				System.out.println("Yes");
				return;
			}
		} if (i * i == n) {
				System.out.println("Yes");
				return;
			} i * i == n i * i i i n {
				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(), b = sc.next();
		int n = Integer.parseInt(a + b);
		sc.close();

		for (int i = 1; i < 100101; i++) {
			if (i * i == n) {
				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(), b = sc.next();
		int n = Integer.parseInt(a + b);
		sc.close();

		for (int i = 1; i < 100101; i++) {
			if (i * i == n) {
				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(), b = sc.next();
		int n = Integer.parseInt(a + b);
		sc.close();

		for (int i = 1; i < 100101; i++) {
			if (i * i == n) {
				System.out.println("Yes");
				return;
			}
		}
		System.out.println("No");
	}
}
