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#include <stdio.h>
#include <stdlib.h>
#include <time.h>
static int part_one(FILE *fp)
{
int res = 0;
char *line = NULL;
size_t len = 0;
int current = 0;
while (getline(&line, &len, fp) != -1) {
if (line[0] == '\n') {
if (current > res)
res = current;
current = 0;
continue;
}
int num;
sscanf(line, "%d\n", &num);
current += num;
}
if (line)
free(line);
return res;
}
static int sum(int maxes[3])
{
int s = 0;
for (int i = 0; i < 3; i++)
s += maxes[i];
return s;
}
static void replace_min(int maxes[3], int replace)
{
int s = 0;
for (int i = 0; i < 3; i++)
if (maxes[i] < maxes[s])
s = i;
if (replace > maxes[s])
maxes[s] = replace;
}
static int part_two(FILE *fp)
{
char *line = NULL;
size_t len = 0;
int maxes[3] = { 0 };
int current = 0;
while (getline(&line, &len, fp) != -1) {
if (line[0] == '\n') {
replace_min(maxes, current);
current = 0;
continue;
}
int num;
sscanf(line, "%d\n", &num);
current += num;
}
replace_min(maxes, current);
if (line)
free(line);
return sum(maxes);
}
int main(void)
{
FILE *fp = fopen("input", "r");
if (!fp)
exit(EXIT_FAILURE);
clock_t tic = clock();
printf("%d\n", part_one(fp));
rewind(fp);
printf("%d\n", part_two(fp));
clock_t toc = clock();
printf("TIME: %f seconds\n", (double)(toc - tic) / CLOCKS_PER_SEC);
fclose(fp);
return 0;
}
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