import java.util.*;

public class Main {

  public static void main (String[] args) {

    Scanner sc = new Scanner(System.in);

    String a = sc.next();
    String b = sc.next();

    sc.close();

    int ab = Integer.valueOf(a + b);
    
    String result = "No";

    int c = 1;
    int d = 1;

    while (d <= ab) {
      if (d == ab){
        result = "Yes";
        break;
      }
      c++;
      d = c * c;
    }

    System.out.println(result);

  }

}
/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