#include "aoc.h"
#include "util.h"

#include <err.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>

void
part1(void)
{
	char buf[256];
	const char *pos, *end;
	int64_t fuel, ans;

	pos = aoc.input;
	end = aoc.input + aoc.input_size;

	ans = 0;
	while (readtok(buf, sizeof(buf), '\n', &pos, end)) {
		fuel = strtoll(buf, NULL, 0);
		ans += fuel / 3 - 2;
	}

	aoc.answer = aprintf("%llu", ans);
	aoc.solution = "3286680";
}

void
part2(void)
{
	char buf[256];
	const char *pos, *end;
	int64_t fuel, ans;

	pos = aoc.input;
	end = aoc.input + aoc.input_size;

	ans = 0;
	while (readtok(buf, sizeof(buf), '\n', &pos, end)) {
		fuel = strtoll(buf, NULL, 0);
		while ((fuel = fuel / 3 - 2) > 0) {
			ans += fuel;
		}
	}

	aoc.answer = aprintf("%llu", ans);
	aoc.solution = "4927158";
}