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 y = Integer.parseInt(a+b);
		double r = (Math.sqrt(y));
	if(r-(int)r==0) {
		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) {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int y = Integer.parseInt(a+b);
		double r = (Math.sqrt(y));
	if(r-(int)r==0) {
		System.out.println("Yes");
	}
	else { 
		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();
		int y = Integer.parseInt(a+b);
		double r = (Math.sqrt(y));
	if(r-(int)r==0) {
		System.out.println("Yes");
	}
	else { 
		System.out.println("No");
		}
    } main {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int y = Integer.parseInt(a+b);
		double r = (Math.sqrt(y));
	if(r-(int)r==0) {
		System.out.println("Yes");
	}
	else { 
		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 int y = Integer.parseInt(a+b); y Integer.parseInt(a+b) Integer.parseInt Integer a+b a b double r = (Math.sqrt(y)); r (Math.sqrt(y)) Math.sqrt Math y if(r-(int)r==0) {
		System.out.println("Yes");
	}
	else { 
		System.out.println("No");
		} r-(int)r==0 r-(int)r r (int)r 0 {
		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) {
		Scanner sc = new Scanner(System.in);
		String a = sc.next();
		String b = sc.next();
		int y = Integer.parseInt(a+b);
		double r = (Math.sqrt(y));
	if(r-(int)r==0) {
		System.out.println("Yes");
	}
	else { 
		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();
		int y = Integer.parseInt(a+b);
		double r = (Math.sqrt(y));
	if(r-(int)r==0) {
		System.out.println("Yes");
	}
	else { 
		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();
		int y = Integer.parseInt(a+b);
		double r = (Math.sqrt(y));
	if(r-(int)r==0) {
		System.out.println("Yes");
	}
	else { 
		System.out.println("No");
		}
    }
}



