diff options
Diffstat (limited to 'advent-of-code/2022/08/2.c')
| -rw-r--r-- | advent-of-code/2022/08/2.c | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/advent-of-code/2022/08/2.c b/advent-of-code/2022/08/2.c deleted file mode 100644 index 7cc8432..0000000 --- a/advent-of-code/2022/08/2.c +++ /dev/null @@ -1,82 +0,0 @@ -#include <stdio.h> -#include <stdint.h> -#include <stdlib.h> -#include <string.h> - -typedef struct { - uint8_t *data; - int rows; - int columns; - int cap; -} Mat; - - - -char buf[4096]; - -int get(Mat *m, int row, int column) { - return m->data[row * m->columns + column]; -} - -int score(Mat *m, int i, int j) { - int height = get(m, i, j); - int s = 1; - int count = 0; - for (int p = i - 1; p >= 0; p--) { - count++; - if (get(m, p, j) >= height) break; - } - s *= count; - count = 0; - for (int p = i + 1; p < m->rows; p++) { - count++; - if (get(m, p, j) >= height) break; - } - s *= count; - count = 0; - for (int p = j - 1; p >= 0; p--) { - count++; - if (get(m, i, p) >= height) break; - } - s *= count; - count = 0; - for (int p = j + 1; p < m->columns; p++) { - count++; - if (get(m, i, p) >= height) break; - } - s *= count; - return s; -} - -int main() { - Mat m; - m.data = malloc(4096); - m.cap = 4096; - m.rows = 0; - m.columns = 0; - - FILE *fp = fopen("input", "r"); - while(fgets(buf, 4096, fp)) { - int len = strlen(buf); - if (len <= 1) break; - if (m.columns == 0) m.columns = len - 1; - while (m.cap < (m.rows + 1) * m.columns) { - m.data = realloc(m.data, m.cap * 2); - m.cap *= 2; - } - memcpy(m.data + m.rows * m.columns, buf, m.columns); - m.rows++; - } - - int maxscore = -1; - for (int i = 0; i < m.rows; i++) { - for (int j = 0; j < m.columns; j++) { - int s = score(&m, i, j); - if (s > maxscore) maxscore = s; - } - } - - printf("%d", maxscore); - return 0; -} - |
