Combinations

import java.util.Scanner;

public class Combinations {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        Integer number = scanner.nextInt();
        Integer counter = 0;

        for(int x1 = 0; x1 <= number; x1++){
            for(int x2 = 0; x2 <= number; x2++){
                for(int x3 = 0; x3 <= number; x3++){
                    if(x1+x2+x3 == number){
                        counter+=1;
                    }
                    else{}
                }
            }
        }
        System.out.println(counter);
    }
}