import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			String str = a + b;
			int num = Integer.parseInt(str);
			int sq = (int) Math.sqrt(num);
			if (sq * sq == num) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		}
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			String str = a + b;
			int num = Integer.parseInt(str);
			int sq = (int) Math.sqrt(num);
			if (sq * sq == num) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		}
	}
} Main public static void main(String[] args) {
		try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			String str = a + b;
			int num = Integer.parseInt(str);
			int sq = (int) Math.sqrt(num);
			if (sq * sq == num) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		}
	} main {
		try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			String str = a + b;
			int num = Integer.parseInt(str);
			int sq = (int) Math.sqrt(num);
			if (sq * sq == num) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		}
	} try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			String str = a + b;
			int num = Integer.parseInt(str);
			int sq = (int) Math.sqrt(num);
			if (sq * sq == num) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		} {
			String a = sc.next();
			String b = sc.next();
			String str = a + b;
			int num = Integer.parseInt(str);
			int sq = (int) Math.sqrt(num);
			if (sq * sq == num) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		} Scanner sc = new Scanner(System.in) Scanner sc = new Scanner(System.in) new Scanner(System.in) String a = sc.next(); a sc.next() sc.next sc String b = sc.next(); b sc.next() sc.next sc String str = a + b; str a + b a b int num = Integer.parseInt(str); num Integer.parseInt(str) Integer.parseInt Integer str int sq = (int) Math.sqrt(num); sq (int) Math.sqrt(num) Math.sqrt Math num if (sq * sq == num) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			} sq * sq == num sq * sq sq sq num {
				System.out.println("Yes");
			} System.out.println("Yes") System.out.println System.out System System.out "Yes" {
				System.out.println("No");
			} 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) {
		try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			String str = a + b;
			int num = Integer.parseInt(str);
			int sq = (int) Math.sqrt(num);
			if (sq * sq == num) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		}
	}
} public class Main {
	public static void main(String[] args) {
		try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			String str = a + b;
			int num = Integer.parseInt(str);
			int sq = (int) Math.sqrt(num);
			if (sq * sq == num) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		}
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		try (Scanner sc = new Scanner(System.in)) {
			String a = sc.next();
			String b = sc.next();
			String str = a + b;
			int num = Integer.parseInt(str);
			int sq = (int) Math.sqrt(num);
			if (sq * sq == num) {
				System.out.println("Yes");
			} else {
				System.out.println("No");
			}
		}
	}
}