import java.io.*;

public class Main {
    public static void main(String[] args) throws Exception {
        try{
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            
            int a = Integer.parseInt(br.readLine());
            
            System.out.println(a + a*a + a*a*a);
            
        }catch(Exception e){
            System.out.println(e);
        }
    }
} import java.io.*; io.* java public class Main {
    public static void main(String[] args) throws Exception {
        try{
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            
            int a = Integer.parseInt(br.readLine());
            
            System.out.println(a + a*a + a*a*a);
            
        }catch(Exception e){
            System.out.println(e);
        }
    }
} Main public static void main(String[] args) throws Exception {
        try{
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            
            int a = Integer.parseInt(br.readLine());
            
            System.out.println(a + a*a + a*a*a);
            
        }catch(Exception e){
            System.out.println(e);
        }
    } main {
        try{
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            
            int a = Integer.parseInt(br.readLine());
            
            System.out.println(a + a*a + a*a*a);
            
        }catch(Exception e){
            System.out.println(e);
        }
    } try{
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            
            int a = Integer.parseInt(br.readLine());
            
            System.out.println(a + a*a + a*a*a);
            
        }catch(Exception e){
            System.out.println(e);
        } catch(Exception e){
            System.out.println(e);
        } Exception e {
            System.out.println(e);
        } System.out.println(e) System.out.println System.out System System.out e {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            
            int a = Integer.parseInt(br.readLine());
            
            System.out.println(a + a*a + a*a*a);
            
        } BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) int a = Integer.parseInt(br.readLine()); a Integer.parseInt(br.readLine()) Integer.parseInt Integer br.readLine() br.readLine br 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) throws Exception {
        try{
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            
            int a = Integer.parseInt(br.readLine());
            
            System.out.println(a + a*a + a*a*a);
            
        }catch(Exception e){
            System.out.println(e);
        }
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        try{
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            
            int a = Integer.parseInt(br.readLine());
            
            System.out.println(a + a*a + a*a*a);
            
        }catch(Exception e){
            System.out.println(e);
        }
    }
} Main
import java.io.*;

public class Main {
    public static void main(String[] args) throws Exception {
        try{
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            
            int a = Integer.parseInt(br.readLine());
            
            System.out.println(a + a*a + a*a*a);
            
        }catch(Exception e){
            System.out.println(e);
        }
    }
}