import 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();
		String ab = a+b;
		int sum = Integer.parseInt(ab);
		int sqrt = (int)Math.sqrt(sum);
		System.out.println(sqrt*sqrt == sum ? "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