import java.util.*;
class Main{
	int pow(int x,int y){
		if(y==0)
			return 1;
		if(y==1)
			return x;
		int temp=pow(x,y/2);
		if(y%2==0)
			return temp*temp;
		else
			return x*temp*temp;
	}
	public static void main(String[] args){
		Main obj=new Main();
		Scanner sc=new Scanner(System.in);
		int a=sc.nextInt();
		System.out.println(obj.pow(a,1)+obj.pow(a,2)+obj.pow(a,3));
	}
}
/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