import java.util.Scanner;
        
public class Main {

    public static void main(String[] args) {
        
        Scanner scanner = new Scanner(System.in);
        
        int a = Integer.valueOf(scanner.nextLine());
        
        int value;
        
        value = a + (a*a) + (a*a*a);
        
        System.out.println(value);
    }
}
/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