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();
		double c = Double.parseDouble(a+b);
		double ans = Math.sqrt(c);
		int num = (int) ans;
		if(ans - num == 0) {
			System.out.println("Yes");
		} else if (ans - num !=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();
		double c = Double.parseDouble(a+b);
		double ans = Math.sqrt(c);
		int num = (int) ans;
		if(ans - num == 0) {
			System.out.println("Yes");
		} else if (ans - num !=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();
		double c = Double.parseDouble(a+b);
		double ans = Math.sqrt(c);
		int num = (int) ans;
		if(ans - num == 0) {
			System.out.println("Yes");
		} else if (ans - num !=0) {
			System.out.println("No");
		}
	} main {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		double c = Double.parseDouble(a+b);
		double ans = Math.sqrt(c);
		int num = (int) ans;
		if(ans - num == 0) {
			System.out.println("Yes");
		} else if (ans - num !=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 double c = Double.parseDouble(a+b); c Double.parseDouble(a+b) Double.parseDouble Double a+b a b double ans = Math.sqrt(c); ans Math.sqrt(c) Math.sqrt Math c int num = (int) ans; num (int) ans if(ans - num == 0) {
			System.out.println("Yes");
		} else if (ans - num !=0) {
			System.out.println("No");
		} ans - num == 0 ans - num ans num 0 {
			System.out.println("Yes");
		} System.out.println("Yes") System.out.println System.out System System.out "Yes" if (ans - num !=0) {
			System.out.println("No");
		} ans - num !=0 ans - num ans num 0 {
			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) {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		double c = Double.parseDouble(a+b);
		double ans = Math.sqrt(c);
		int num = (int) ans;
		if(ans - num == 0) {
			System.out.println("Yes");
		} else if (ans - num !=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();
		double c = Double.parseDouble(a+b);
		double ans = Math.sqrt(c);
		int num = (int) ans;
		if(ans - num == 0) {
			System.out.println("Yes");
		} else if (ans - num !=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();
		double c = Double.parseDouble(a+b);
		double ans = Math.sqrt(c);
		int num = (int) ans;
		if(ans - num == 0) {
			System.out.println("Yes");
		} else if (ans - num !=0) {
			System.out.println("No");
		}
	}
}
