import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      	int n = sc.nextInt();
      	int ans = 0;
      	for(int i=1;i<4;i++){
          ans += Math.pow(n,i);
        }
      System.out.println(ans);	
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      	int n = sc.nextInt();
      	int ans = 0;
      	for(int i=1;i<4;i++){
          ans += Math.pow(n,i);
        }
      System.out.println(ans);	
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      	int n = sc.nextInt();
      	int ans = 0;
      	for(int i=1;i<4;i++){
          ans += Math.pow(n,i);
        }
      System.out.println(ans);	
	} main {
		Scanner sc = new Scanner(System.in);
      	int n = sc.nextInt();
      	int ans = 0;
      	for(int i=1;i<4;i++){
          ans += Math.pow(n,i);
        }
      System.out.println(ans);	
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int ans = 0; ans 0 for(int i=1;i<4;i++){
          ans += Math.pow(n,i);
        } int i=1; int i=1; i 1 i<4 i 4 i++ i++ i {
          ans += Math.pow(n,i);
        } {
          ans += Math.pow(n,i);
        } ans += Math.pow(n,i) ans Math.pow(n,i) Math.pow Math n i 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 = sc.nextInt();
      	int ans = 0;
      	for(int i=1;i<4;i++){
          ans += Math.pow(n,i);
        }
      System.out.println(ans);	
	}
} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      	int n = sc.nextInt();
      	int ans = 0;
      	for(int i=1;i<4;i++){
          ans += Math.pow(n,i);
        }
      System.out.println(ans);	
	}
} Main
import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      	int n = sc.nextInt();
      	int ans = 0;
      	for(int i=1;i<4;i++){
          ans += Math.pow(n,i);
        }
      System.out.println(ans);	
	}
}