import java.util.*;
import java.io.*;
public class Main {
    public static void main(String[]args){
		Scanner sc = new Scanner(System.in);
		PrintWriter ou = new PrintWriter(System.out);
		int n = Integer.parseInt(sc.next());
		sc.close();
		long yono = 0;
		for(int i = 0 ; i < n ; i++)for(int j = 0 ; j < n ; j++)for(int k = 0 ; k < n ; k++)if(5 * i + 2 * j + 3 * k == n && i >= j) yono++;
		ou.println(yono);
		ou.flush();
	}
}