cleanup

[advent21.git] / 06a.c

diff --git a/06a.c b/06a.c
index c9152c6..e2634d2 100644 (file)
--- a/06a.c
+++ b/06a.c
@@ -4,10 +4,11 @@
 
 int main()
 {
-       char buf[1000];
-       if (fgets(buf, 1000, stdin) == NULL)
-               return 1;
+       char *buf = NULL;
+       size_t len = 0;
        long fish[9] = {0};
+
+       getline(&buf, &len, stdin);
        char *p = strtok(buf, ",");
        fish[atoi(p)]++;
        while ((p = strtok(NULL, ",")) != NULL)
@@ -16,8 +17,7 @@ int main()
        for (long day = 0; day<80; day++)
                fish[(day+7) % 9] += fish[day%9];
 
-       long sum = 0;
-       for (long i = 0; i<=8; i++)
-               sum += fish[i];
-       printf("%lu\n", sum);
+       for (long i = 1; i<=8; i++)
+               fish[0] += fish[i];
+       printf("%ld\n", fish[0]);
 }