import java.util.Scanner;

public class Main {

  public static void main(String[] args) {

    final Scanner scanner = new Scanner(System.in);

    final int a = scanner.nextInt();
    final int b = scanner.nextInt();
    final int value = Integer.parseInt(Integer.toString(a) + Integer.toString(b));

    final int lowerSqrt = (int) Math.sqrt(value);
    if (value % lowerSqrt == 0) {
      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