47 lines
800 B
C
47 lines
800 B
C
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
int calculate_fuel1(int mass)
|
|
{
|
|
return mass / 3 - 2;
|
|
}
|
|
|
|
int calculate_fuel2(int mass)
|
|
{
|
|
int fuel = mass / 3 - 2;
|
|
if (fuel < 0)
|
|
return 0;
|
|
else
|
|
return fuel + calculate_fuel2(fuel);
|
|
}
|
|
|
|
int main(void)
|
|
{
|
|
FILE *fp;
|
|
char *line = NULL;
|
|
size_t len = 0;
|
|
ssize_t read;
|
|
|
|
fp = fopen("../input", "r");
|
|
if (fp == NULL)
|
|
exit(EXIT_FAILURE);
|
|
|
|
int fuel1 = 0;
|
|
int fuel2 = 0;
|
|
int mass;
|
|
|
|
while ((read = getline(&line, &len, fp)) != -1) {
|
|
mass = atoi(line);
|
|
fuel1 += calculate_fuel1(mass);
|
|
fuel2 += calculate_fuel2(mass);
|
|
}
|
|
|
|
printf("Solution for Part One: %d\n", fuel1);
|
|
printf("Solution for Part Two: %d\n", fuel2);
|
|
|
|
fclose(fp);
|
|
free(line);
|
|
|
|
return 0;
|
|
}
|