import java.util.Scanner;

public class Main extends Exception{
    public static void main(String[] args) {
        Scanner s1 = new Scanner(System.in);
        String a = s1.next()+s1.next();
        int a1= Integer.parseInt(a);
        int a2=(int)Math.sqrt(a1);
        if (a1 == (a2*a2)){
            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