/*
 * Copyright (c) 2013 Hiroyasu Kamo
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

/*
 *  Print tetrahedral numbers.
 *  Author: Hiroyasu Kamo <wd@ics.nara-wu.ac.jp>
 */

#include <stdio.h>
#include <limits.h>
#include <unistd.h>

int
main(int argc, char **argv)
{
	const char	*format = "%lld\n";
	char	rflag = 0;
	long long	n = 10, N = LLONG_MAX;
	int	ch;
	long long	i, j, k;

	while ((ch = getopt(argc, argv, "rn:N:")) != -1) {
		switch (ch) {
		case 'r':
			rflag = 1;
			break;
		case 'n':
			sscanf(optarg, "%lld", &n);
			break;
		case 'N':
			sscanf(optarg, "%lld", &N);
			break;
		default:
			return 1;
		}
	}
	if (rflag) {
		format = "%20lld\n";
	}
	if (optind < argc) {
		fprintf(stderr, "%s: too many arguments\n", argv[0]);
		return 1;
	}
	for (i = 1, j = 1, k = 1; i <= n && k <= N; ++ i, j += i, k += j) {
		printf(format, k);
	}
	return 0;
}