import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		int a1 = s.nextInt();
		int a2 = s.nextInt();

		String input = Integer.toString(a1) + Integer.toString(a2);
		int iValue = Integer.parseInt(input);
		double sqrt = Math.floor(Math.sqrt(iValue));

		String ret;
		if (iValue == Math.pow(sqrt, 2)) {
			ret = "Yes";
		} else {
			ret = "No";
		}

		System.out.println(ret);
	}

}
/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