import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		double kekka;
		int kekka2;
		
		if((1<=a)&&(a<=10)) {
			kekka = a+Math.pow(a,2)+Math.pow(a,3);
			kekka2 = (int)kekka;
			System.out.println(kekka2);
		}
		
		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