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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;
while (getline(&line, &len, fp) != -1) {
int low, high, cnt = 0;
char ch;
char str[42];
sscanf(line, "%d-%d %c: %s\n", &low, &high, &ch, &str[0]);
for (char *p = str; *p; p++)
if (*p == ch)
cnt++;
if (cnt >= low && cnt <= high)
res++;
}
return res;
}
int part_two(FILE *fp)
{
int res = 0;
char *line = NULL;
size_t len = 0;
while (getline(&line, &len, fp) != -1) {
int low, high, cnt = 0;
char ch, first, second;
char str[256];
sscanf(line, "%d-%d %c: %s\n", &low, &high, &ch, &str[0]);
first = str[low - 1];
second = str[high - 1];
if (first == ch && second != ch || first != ch && second == ch)
res++;
}
return res;
}
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("%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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