import java.io.*;
import java.util.*;

class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    int n = sc.nextInt();
    System.out.println(n*(1+n*(1+n)));
  }
} import java.io.*; io.* java import java.util.*; util.* java class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    int n = sc.nextInt();
    System.out.println(n*(1+n*(1+n)));
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    int n = sc.nextInt();
    System.out.println(n*(1+n*(1+n)));
  } main {
    Scanner sc = new Scanner(System.in);
    
    int n = sc.nextInt();
    System.out.println(n*(1+n*(1+n)));
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc System.out.println(n*(1+n*(1+n))) System.out.println System.out System System.out n*(1+n*(1+n)) n (1+n*(1+n)) 1 n*(1+n) n (1+n) 1 n String[] args args
import java.io.*;
import java.util.*;

class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    
    int n = sc.nextInt();
    System.out.println(n*(1+n*(1+n)));
  }
}
