diff options
| -rw-r--r-- | common.py | 4 | ||||
| -rw-r--r-- | input/10 | 143 | ||||
| -rw-r--r-- | input/10-example | 146 | ||||
| -rw-r--r-- | input/12 | 41 | ||||
| -rw-r--r-- | input/12-example | 5 | ||||
| -rw-r--r-- | input/8 | 99 | ||||
| -rw-r--r-- | input/8-example | 5 | ||||
| -rw-r--r-- | problem10.py | 38 | ||||
| -rw-r--r-- | problem12.py | 61 | ||||
| -rw-r--r-- | problem8.py | 81 |
10 files changed, 623 insertions, 0 deletions
diff --git a/common.py b/common.py new file mode 100644 index 0000000..fb1be19 --- /dev/null +++ b/common.py @@ -0,0 +1,4 @@ +import sys + +def day(): + return sys.argv[0].split(".")[0].removeprefix("problem") diff --git a/input/10 b/input/10 new file mode 100644 index 0000000..f93ec2c --- /dev/null +++ b/input/10 @@ -0,0 +1,143 @@ +noop +noop +noop +addx 5 +addx 1 +addx 4 +addx 1 +noop +addx 4 +noop +addx 1 +addx 4 +addx 8 +addx -7 +addx 3 +addx 1 +noop +addx 4 +addx 2 +addx 5 +addx -1 +noop +addx -37 +noop +noop +addx 3 +addx 2 +addx 13 +addx 12 +addx -15 +addx -2 +addx 2 +addx -11 +addx 18 +addx 2 +addx -15 +addx 16 +addx 5 +addx 2 +addx 5 +noop +noop +noop +addx 3 +addx -2 +addx -38 +noop +addx 3 +addx 4 +noop +noop +noop +noop +noop +addx 5 +addx 5 +noop +noop +addx 21 +addx -17 +addx 6 +noop +noop +noop +noop +addx 5 +noop +noop +noop +noop +noop +addx 3 +addx 5 +addx -38 +noop +noop +addx 5 +addx -2 +addx 1 +addx 7 +noop +addx 22 +addx -18 +addx -11 +addx 27 +addx -13 +addx 2 +addx 5 +addx -8 +addx 9 +addx 2 +noop +addx 7 +noop +addx 1 +noop +addx -38 +noop +addx 2 +addx 5 +addx -3 +noop +addx 8 +addx 11 +addx -6 +noop +addx 24 +addx -31 +addx 10 +addx 2 +addx 5 +addx 3 +noop +addx 2 +addx -29 +addx 21 +addx 11 +addx 5 +addx -39 +addx 4 +addx -2 +addx 2 +addx 7 +noop +addx -1 +addx 2 +noop +addx 4 +noop +addx 1 +addx 2 +addx 5 +addx 2 +noop +noop +addx -6 +addx 9 +addx -18 +addx 25 +addx 3 +noop +addx -17 +noop diff --git a/input/10-example b/input/10-example new file mode 100644 index 0000000..94cd0a8 --- /dev/null +++ b/input/10-example @@ -0,0 +1,146 @@ +addx 15 +addx -11 +addx 6 +addx -3 +addx 5 +addx -1 +addx -8 +addx 13 +addx 4 +noop +addx -1 +addx 5 +addx -1 +addx 5 +addx -1 +addx 5 +addx -1 +addx 5 +addx -1 +addx -35 +addx 1 +addx 24 +addx -19 +addx 1 +addx 16 +addx -11 +noop +noop +addx 21 +addx -15 +noop +noop +addx -3 +addx 9 +addx 1 +addx -3 +addx 8 +addx 1 +addx 5 +noop +noop +noop +noop +noop +addx -36 +noop +addx 1 +addx 7 +noop +noop +noop +addx 2 +addx 6 +noop +noop +noop +noop +noop +addx 1 +noop +noop +addx 7 +addx 1 +noop +addx -13 +addx 13 +addx 7 +noop +addx 1 +addx -33 +noop +noop +noop +addx 2 +noop +noop +noop +addx 8 +noop +addx -1 +addx 2 +addx 1 +noop +addx 17 +addx -9 +addx 1 +addx 1 +addx -3 +addx 11 +noop +noop +addx 1 +noop +addx 1 +noop +noop +addx -13 +addx -19 +addx 1 +addx 3 +addx 26 +addx -30 +addx 12 +addx -1 +addx 3 +addx 1 +noop +noop +noop +addx -9 +addx 18 +addx 1 +addx 2 +noop +noop +addx 9 +noop +noop +noop +addx -1 +addx 2 +addx -37 +addx 1 +addx 3 +noop +addx 15 +addx -21 +addx 22 +addx -6 +addx 1 +noop +addx 2 +addx 1 +noop +addx -10 +noop +noop +addx 20 +addx 1 +addx 2 +addx 2 +addx -6 +addx -11 +noop +noop +noop
\ No newline at end of file diff --git a/input/12 b/input/12 new file mode 100644 index 0000000..1fb4f0a --- /dev/null +++ b/input/12 @@ -0,0 +1,41 @@ +abcccccccccccccccccaaccccccccccccaaaaaaaacccccccccccaaaaaccccaaaaaaccaaaaaaaaaaaaaaaaaccccccccccccccccaaacccccaaaaaaaacccaaaccccccccccccccccccccccccccccccccccccccccccccccccccaaaaa +abccccccccccccccccaaacaacccccccccccaaaacccccccccccccaaaaaacccaaaaaaccaaaaaaaaaaaaaaaaaaaacccccccccaaacaaacccccaaaaaaaaaccaaaaccccccccccccccccccccccccccccccccccccccccccccccccaaaaaa +abcccccccccccccccccaaaaacccccccccccaaaaaccccccccccccaaaaaaccccaaaacccaaaacccaaaaaaaaaaaaacccccccccaaaaaaaaaacccaaaaaaaaccaaaaccccccccccccccccccccccccccccccccccaaacccccccccccaaaaaa +abcccccccccccccccaaaaaacccccccccccaaacaaccaaccccccccaaaaaaccccaaaacccaaaccccaaaaaaaaaaaaaccccccccccaaaaaaaaaccaaaaaacccccaaacccccccccccccccccccccccccccccccccccaaaccccccccccccccaaa 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--- /dev/null +++ b/input/8-example @@ -0,0 +1,5 @@ +30373 +25512 +65332 +33549 +35390
\ No newline at end of file diff --git a/problem10.py b/problem10.py new file mode 100644 index 0000000..41ce1eb --- /dev/null +++ b/problem10.py @@ -0,0 +1,38 @@ +from common import day + +fh = open(f"input/{day()}") +X = 1 +cycle = 0 +r = 0 +row = [] +while True: + cycle += 1 + pos = (cycle - 1) % 40 + if pos == 0: + print("".join(row)) + row = [] + if pos in (X-1, X, X+1): + row.append("#") + else: + row.append(".") + try: + line = next(fh) + except StopIteration: + print(r) + break + line = line.rstrip() + match line.split(): + case ["noop"]: + continue + case ["addx", val]: + val = int(val) + cycle += 1 + pos = (cycle - 1) % 40 + if pos == 0: + print("".join(row)) + row = [] + if pos in (X-1, X, X+1): + row.append("#") + else: + row.append(".") + X += val diff --git a/problem12.py b/problem12.py new file mode 100644 index 0000000..7aefcd3 --- /dev/null +++ b/problem12.py @@ -0,0 +1,61 @@ +from collections import deque +from common import day + +with open(f"input/{day()}") as fh: + G = [line.rstrip() for line in fh] + +for i, s in enumerate(G): + if (j := s.find("S")) != -1: + start = (i, j) + if (j := s.find("E")) != -1: + end = (i, j) + +def elevation(s): + if s == "S": + return 0 + if s == "E": + return 25 + else: + return ord(s) - 97 + +def get_neighbours(G, pos): + m, n = len(G), len(G[0]) + i, j = pos + g = [(i-1, j), (i+1, j), (i, j-1), (i, j+1)] + g = filter(lambda t: (0 <= t[0] < m) and (0 <= t[1] < n), g) + return filter(lambda p: elevation(G[p[0]][p[1]]) <= elevation(G[i][j]) + 1, g) + + +def bfs(start, end, G, visited): + q = deque() + q.append(start) + visited[start] = None + while q: + v = q.popleft() + if v == end: + return visited + else: + for w in get_neighbours(G, v): + if w not in visited: + q.append(w) + visited[w] = v + +curr_min = 484 +for i in range(len(G)): + for j in range(len(G[0])): + if G[i][j] == "a": + visited = {} + start = (i, j) + pomme = bfs(start, end, G, visited) + if pomme is None: + continue + path = [end] + parent = end + while True: + parent = visited[parent] + if parent is None: + break + path.append(parent) + curr_min = min(curr_min, len(path) -1) + +print(curr_min) diff --git a/problem8.py b/problem8.py new file mode 100644 index 0000000..552fc49 --- /dev/null +++ b/problem8.py @@ -0,0 +1,81 @@ +from common import day +import numpy as np + +fh = open(f"input/{day()}") +M = [] +for line in fh: + line = line.rstrip() + M.append(np.array([int(c) for c in line], dtype=np.int8)) +M = np.array(M) +m, n = M.shape +visible = set() +for i, row in enumerate(M): + curr = -1 + for j, e in enumerate(row): + if e > curr: + visible.add((i, j)) + curr = e + +for i, row in enumerate(M): + curr = -1 + for j, e in enumerate(row[::-1]): + if e > curr: + visible.add((i, n - 1 - j)) + curr = e + +for j, col in enumerate(M.T): + curr = -1 + for i, e in enumerate(col): + if e > curr: + visible.add((i, j)) + curr = e + +for j, col in enumerate(M.T): + curr = -1 + for i, e in enumerate(col[::-1]): + if e > curr: + visible.add((m - 1 - i, j)) + curr = e +print(len(visible)) + +max_score = -1 +for i in range(m): + for j in range(n): + k = j + 1 + curr = M[i,j] + right_view = 0 + while k < n: + right_view += 1 + if M[i,k] < curr: + k += 1 + else: + break + + k = j - 1 + left_view = 0 + while k >= 0: + left_view += 1 + if M[i,k] < curr: + k -= 1 + else: + break + + k = i + 1 + down_view = 0 + while k < m: + down_view += 1 + if M[k,j] < curr: + k += 1 + else: + break + + k = i - 1 + up_view = 0 + while k >= 0: + up_view += 1 + if M[k,j] < curr: + k -= 1 + else: + break + scenic_score = left_view * right_view * up_view * down_view + max_score = max(max_score, scenic_score) |