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

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

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

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