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 num = Integer.parseInt(a + b);
		String result = "No";
		for(int i = 1; i*i <= num; i++) {
			if(i * i == num) {
				result = "Yes";
			}
		}
		System.out.println(result);
	}
} 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 num = Integer.parseInt(a + b);
		String result = "No";
		for(int i = 1; i*i <= num; i++) {
			if(i * i == num) {
				result = "Yes";
			}
		}
		System.out.println(result);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int num = Integer.parseInt(a + b);
		String result = "No";
		for(int i = 1; i*i <= num; i++) {
			if(i * i == num) {
				result = "Yes";
			}
		}
		System.out.println(result);
	} main {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int num = Integer.parseInt(a + b);
		String result = "No";
		for(int i = 1; i*i <= num; i++) {
			if(i * i == num) {
				result = "Yes";
			}
		}
		System.out.println(result);
	} 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 num = Integer.parseInt(a + b); num Integer.parseInt(a + b) Integer.parseInt Integer a + b a b String result = "No"; result "No" for(int i = 1; i*i <= num; i++) {
			if(i * i == num) {
				result = "Yes";
			}
		} int i = 1; int i = 1; i 1 i*i <= num i*i i i num i++ i++ i {
			if(i * i == num) {
				result = "Yes";
			}
		} {
			if(i * i == num) {
				result = "Yes";
			}
		} if(i * i == num) {
				result = "Yes";
			} i * i == num i * i i i num {
				result = "Yes";
			} result = "Yes" result "Yes" System.out.println(result) System.out.println System.out System System.out result 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 num = Integer.parseInt(a + b);
		String result = "No";
		for(int i = 1; i*i <= num; i++) {
			if(i * i == num) {
				result = "Yes";
			}
		}
		System.out.println(result);
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int num = Integer.parseInt(a + b);
		String result = "No";
		for(int i = 1; i*i <= num; i++) {
			if(i * i == num) {
				result = "Yes";
			}
		}
		System.out.println(result);
	}
} 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 num = Integer.parseInt(a + b);
		String result = "No";
		for(int i = 1; i*i <= num; i++) {
			if(i * i == num) {
				result = "Yes";
			}
		}
		System.out.println(result);
	}
}
