import java.util.Scanner;

public class Main {
    public static void main(String[] args) {

        double x = 0;
        String ans = "Yes";

        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();

        x = Double.parseDouble((a + b));

        if (Math.sqrt(x) % 1 != 0) {
            ans = "No";
        }
        System.out.println(ans);
    }
}

/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