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.valueOf(a + b);
		String ans = "Yes";
		
		if (Math.sqrt(c) % 1 != 0) {
			ans = "No";
		}
		
		System.out.println(ans);
		
		sc.close();
	}
} 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.valueOf(a + b);
		String ans = "Yes";
		
		if (Math.sqrt(c) % 1 != 0) {
			ans = "No";
		}
		
		System.out.println(ans);
		
		sc.close();
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner((System.in));
		String a = sc.next();
		String b = sc.next();
		int c = Integer.valueOf(a + b);
		String ans = "Yes";
		
		if (Math.sqrt(c) % 1 != 0) {
			ans = "No";
		}
		
		System.out.println(ans);
		
		sc.close();
	} main {
		Scanner sc = new Scanner((System.in));
		String a = sc.next();
		String b = sc.next();
		int c = Integer.valueOf(a + b);
		String ans = "Yes";
		
		if (Math.sqrt(c) % 1 != 0) {
			ans = "No";
		}
		
		System.out.println(ans);
		
		sc.close();
	} 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.valueOf(a + b); c Integer.valueOf(a + b) Integer.valueOf Integer a + b a b String ans = "Yes"; ans "Yes" if (Math.sqrt(c) % 1 != 0) {
			ans = "No";
		} Math.sqrt(c) % 1 != 0 Math.sqrt(c) % 1 Math.sqrt(c) Math.sqrt Math c 1 0 {
			ans = "No";
		} ans = "No" ans "No" System.out.println(ans) System.out.println System.out System System.out ans sc.close() sc.close sc 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.valueOf(a + b);
		String ans = "Yes";
		
		if (Math.sqrt(c) % 1 != 0) {
			ans = "No";
		}
		
		System.out.println(ans);
		
		sc.close();
	}
} 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.valueOf(a + b);
		String ans = "Yes";
		
		if (Math.sqrt(c) % 1 != 0) {
			ans = "No";
		}
		
		System.out.println(ans);
		
		sc.close();
	}
} 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.valueOf(a + b);
		String ans = "Yes";
		
		if (Math.sqrt(c) % 1 != 0) {
			ans = "No";
		}
		
		System.out.println(ans);
		
		sc.close();
	}
}
