Solve day 9 till 11 and part 1 day 12 2018

2024-07-09 17:45:08 -04:00
parent e9ba9cee63
commit 26f523047e
6 changed files with 345 additions and 1 deletions
--- a/2018/d12.py
+++ b/2018/d12.py
@@ -0,0 +1,132 @@
+from lib import *
+
+data = """initial state: #..#.#..##......###...###
+
+...## => #
+..#.. => #
+.#... => #
+.#.#. => #
+.#.## => #
+.##.. => #
+.#### => #
+#.#.# => #
+#.### => #
+##.#. => #
+##.## => #
+###.. => #
+###.# => #
+####. => #"""
+
+
+all = """
+    
+
+                 1         2         3     
+       0         0         0         0     
+ 0: ...#..#.#..##......###...###...........
+ 1: ...#...#....#.....#..#..#..#...........
+ 2: ...##..##...##....#..#..#..##..........
+ 3: ..#.#...#..#.#....#..#..#...#..........
+ 4: ...#.#..#...#.#...#..#..##..##.........
+ 5: ....#...##...#.#..#..#...#...#.........
+ 6: ....##.#.#....#...#..##..##..##........
+ 7: ...#..###.#...##..#...#...#...#........
+ 8: ...#....##.#.#.#..##..##..##..##.......
+ 9: ...##..#..#####....#...#...#...#.......
+10: ..#.#..#...#.##....##..##..##..##......
+11: ...#...##...#.#...#.#...#...#...#......
+12: ...##.#.#....#.#...#.#..##..##..##.....
+13: ..#..###.#....#.#...#....#...#...#.....
+14: ..#....##.#....#.#..##...##..##..##....
+15: ..##..#..#.#....#....#..#.#...#...#....
+16: .#.#..#...#.#...##...#...#.#..##..##...
+17: ..#...##...#.#.#.#...##...#....#...#...
+18: ..##.#.#....#####.#.#.#...##...##..##..
+19: .#..###.#..#.#.#######.#.#.#..#.#...#..
+20: .#....##....#####...#######....#.#..##.
+    """
+
+
+def part_1(data):
+    state = None
+    map = {}
+    for line in data.splitlines():
+        if "initial state" in line:
+            _, rest = line.split(":")
+            state = rest.strip()
+        if "=>" in line:
+            lhs, rhs = line.split(" => ")
+            assert lhs not in map
+            map[lhs] = rhs
+
+    assert state is not None
+    offset = 50
+    state = "." * offset + state + "." * offset
+    for i in range(20):
+        ns = ".."
+        for i in range(2, len(state) - 2):
+            s = state[i - 2:i + 3]
+            ns += map[s]
+        ns += ".."
+        state = ns
+
+    r = 0
+    for i in range(2, len(state) - 2):
+        if state[i] == "#":
+            r += (i - offset)
+    print(r)
+
+
+def part_2(data):
+    state = None
+    map = {}
+    for line in data.splitlines():
+        if "initial state" in line:
+            _, rest = line.split(":")
+            state = rest.strip()
+        if "=>" in line:
+            lhs, rhs = line.split(" => ")
+            assert lhs not in map
+            map[lhs] = rhs
+
+    assert state is not None
+    offset = 55
+    state = "." * offset + state + offset * ".."
+    for i in range(100):
+        # if state.startswith("..."):
+        #     assert False
+        # elif state.startswith("..#"):
+        #     pass
+        # elif state.startswith(".#"):
+        #     state = "." + state
+        #     offset += 1
+        # elif state.startswith("#"):
+        #     state = ".." + state
+        #     offset += 2
+        print(state)
+
+        ns = ".."
+        for i in range(2, len(state) - 2):
+            s = state[i - 2:i + 3]
+            ns += map[s]
+        ns += ".."
+        state = ns
+        # print(state)
+
+    r = 0
+    for i in range(2, len(state) - 2):
+        if state[i] == "#":
+            r += (i - offset)
+    print(r)
+
+
+def main():
+    input_file = __file__.replace(".py", ".txt")
+    with open(input_file) as f:
+        data = f.read()
+    part_1(data)
+    part_2(data)
+
+
+if __name__ == "__main__":
+    main()