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


