import java.util.Scanner;
public class Main {
  public static void main(String[] args){
    Scanner input = new Scanner (System.in);
    int a = input.nextInt();
    if (a >= 0 && a<=10){
      System.out.println(a + a * a + a * a * a);
    }else{
      return;
    }
  }
}

/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