
import java.util.Arrays;
import java.util.Scanner;
import java.util.Vector;

//1, 12, 123, 1234
public class Main {
	public static void main(String args[]) {
		Scanner in = new Scanner(System.in);
		long n = in.nextLong();
		long sum = n;
		for (int i = 2; i <= 3; i++) {
			sum+=Math.pow(n, i);
		}
		System.out.println(sum);
	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz