import java.util.Scanner;

public class Main {

	public static void main(String... nui) {
		
		Scanner sc = new Scanner(System.in);
		
		String a = sc.next();
		String b = sc.next();
		
		a += b;
		
		int s = Integer.parseInt(a);
		
		System.out.println((Math.sqrt(s) == (int)Math.sqrt(s)) ? "Yes" : "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