import java.util.Scanner;

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

public class Main {
	
	
	public static void main(String[] args) throws Exception{
		Scanner sc= new Scanner(System.in);
		int n = sc.nextInt();
		sc.nextLine();
		System.out.println(n+n*n+n*n*n);
		
		
	}
}
