import java.util.*;
import java.math.RoundingMode;
import java.math.BigDecimal;
 
 
 
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 import java.math.RoundingMode; RoundingMode java.math import java.math.BigDecimal; BigDecimal java.math 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.*;
import java.math.RoundingMode;
import java.math.BigDecimal;
 
 
 
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);
	}
}