import java.util.*;	
public class Main {	
	public static void main(String[] args){
      Scanner sc = new Scanner(System.in);
      String line = sc.nextLine();	
      String str[] = line.split(" ");	
      double num = Double.parseDouble(str[0] + str[1]);
      double square = Math.sqrt(Double.parseDouble(str[0] + str[1]));
      if(num % square == 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