import java.util.*; 
public class Main{
    static public void main(String[] args){
        Scanner sc=new Scanner(System.in);
       int a=sc.nextInt();

       int a2=a*a;
       int a3=a*a*a;
       System.out.print(a+a2+a3);
        sc.close();
    }
}
/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