import java.io.IOException;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();

		System.out.println(a+a*a+a*a*a);
	}
} import java.io.IOException; IOException java.io import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();

		System.out.println(a+a*a+a*a*a);
	}
} Main public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();

		System.out.println(a+a*a+a*a*a);
	} main {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();

		System.out.println(a+a*a+a*a*a);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc System.out.println(a+a*a+a*a*a) System.out.println System.out System System.out a+a*a+a*a*a a+a*a+a*a*a a a*a a a a*a*a a*a*a a a a String[] args args public class Main {

	public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();

		System.out.println(a+a*a+a*a*a);
	}
} public class Main {

	public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();

		System.out.println(a+a*a+a*a*a);
	}
} Main
import java.io.IOException;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner(System.in);

		int a = sc.nextInt();

		System.out.println(a+a*a+a*a*a);
	}
}
