import java.util.*;
public class Main{
	public static final Scanner sc = new Scanner(System.in);
  	public static void main(String[] args){
    	int n = sc.nextInt();
      	long ans = 0;
      	for (int i=1; i<=3; i++){
        	ans += Math.pow(n, i);
        }
      	System.out.println(ans);
    }
}

/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