import java.util.*;
public class Main {
	public static void main (String[] args) {
      Scanner sc = new Scanner(System.in);
      String A = sc.next(), B = sc.next();
      String AB = A+B;
      int num = Integer.valueOf(AB);
      int sqrt = (int)Math.pow(num,0.5);
      String ans = (sqrt*sqrt == num)?"Yes" : "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