import java.util.Scanner;


public class Main {

	public static void main(String[] args)  {
		Scanner sc = new Scanner(System.in);
		int n = Integer.parseInt(sc.next());
		int ans = n;
		ans += n*n;
		ans += n*n*n;
		System.out.println(ans);
		}
}

 import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args)  {
		Scanner sc = new Scanner(System.in);
		int n = Integer.parseInt(sc.next());
		int ans = n;
		ans += n*n;
		ans += n*n*n;
		System.out.println(ans);
		}
} Main public static void main(String[] args)  {
		Scanner sc = new Scanner(System.in);
		int n = Integer.parseInt(sc.next());
		int ans = n;
		ans += n*n;
		ans += n*n*n;
		System.out.println(ans);
		} main {
		Scanner sc = new Scanner(System.in);
		int n = Integer.parseInt(sc.next());
		int ans = n;
		ans += n*n;
		ans += n*n*n;
		System.out.println(ans);
		} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = Integer.parseInt(sc.next()); n Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int ans = n; ans n ans += n*n ans n*n n n ans += n*n*n ans n*n*n n*n*n n n n System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {

	public static void main(String[] args)  {
		Scanner sc = new Scanner(System.in);
		int n = Integer.parseInt(sc.next());
		int ans = n;
		ans += n*n;
		ans += n*n*n;
		System.out.println(ans);
		}
} public class Main {

	public static void main(String[] args)  {
		Scanner sc = new Scanner(System.in);
		int n = Integer.parseInt(sc.next());
		int ans = n;
		ans += n*n;
		ans += n*n*n;
		System.out.println(ans);
		}
} Main
import java.util.Scanner;


public class Main {

	public static void main(String[] args)  {
		Scanner sc = new Scanner(System.in);
		int n = Integer.parseInt(sc.next());
		int ans = n;
		ans += n*n;
		ans += n*n*n;
		System.out.println(ans);
		}
}


