import java.util.Scanner;
import java.util.Random;
import java.math.*;

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

        int b=(int)(Math.pow(a,2)+Math.pow(a,3)+a);
            System.out.println(b);
    }
}
/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