import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = scanner.nextInt();
        int b = scanner.nextInt();

        String AB = String.valueOf(a) + String.valueOf(b);
        double ab = Double.parseDouble(AB);

        //平方数を求める
        int square =(int) Math.sqrt(ab);

        //2乗して元の数に戻るか確認
        int conf = square * square;

        String judge = (int)ab == conf ? "Yes" : "No";
        System.out.println(judge);
    }

}
/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