import java.util.Scanner;

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

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

