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#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int part_one(FILE *fp)
{
int res = 0;
char *line = NULL;
size_t len = 0, strlen = 0;
int curr = 0;
while ((strlen = getline(&line, &len, fp)) != -1) {
if (line[curr % (strlen - 1)] == '#')
res++;
curr += 3;
}
return res;
}
#define DOWN_TWO (1 << 15)
int part_two(FILE *fp)
{
int final = 1;
int opt[] = { 1, 3, 5, 7, 1 | DOWN_TWO };
char *line = NULL;
size_t len = 0, strlen = 0;
for (int i = 0; i < sizeof(opt) / sizeof(opt[0]); i++) {
int res = 0, row = 0, curr = 0;
while ((strlen = getline(&line, &len, fp)) != -1) {
if (row++ % 2 == 1 && opt[i] & DOWN_TWO)
continue;
if (line[curr % (strlen - 1)] == '#')
res++;
curr += opt[i] & ~DOWN_TWO;
}
rewind(fp);
final *= res;
}
return final;
}
int main(int argc, char *argv[])
{
FILE *fp = fopen("input", "r");
if (!fp)
exit(EXIT_FAILURE);
clock_t tic = clock();
printf("%d\n", part_one(fp));
rewind(fp);
printf("%u\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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