import java. util.Scanner;
public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner scan = new Scanner(System.in);

		String a = scan.next();
		String b = scan.next();
		String s = a +b;

		double i = Integer.parseInt(s);
		double sqr = Math.sqrt(i);
		int c = (int)sqr;

		if(c==sqr) {
			System.out.println("Yes");
		}else {
			System.out.println("No");
		}



	}

}

/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz