diff --git a/day-18/01.py b/day-18/01.py
new file mode 100644
index 0000000..567fa6b
--- /dev/null
+++ b/day-18/01.py
@@ -0,0 +1,60 @@
+from time import sleep
+
+m = []
+
+with open('input.txt', 'r') as f:
+    for line in f.readlines():
+        row = []
+        for sym in line.strip():
+            row.append(sym)
+        m.append(row)
+
+def print_map():
+    for row in m:
+        print(''.join(row))
+
+print_map()
+
+def get_adjacent(x, y):
+    adj = []
+    for i in [-1, 0, 1]:
+        for j in [-1, 0, 1]:
+            if not (i == 0 and j == 0):
+                if x + i < 0 or y + j < 0:
+                    continue
+                try:
+                    adj.append(m[x + i][y + j])
+                except:
+                    pass
+    return adj 
+
+for i in range(10):
+    new_m = []
+    for x, row in enumerate(m):
+        new_row = []
+        for y, sym in enumerate(row):
+            adj = get_adjacent(x, y)
+            num_trees = adj.count('|')
+            num_lumb = adj.count('#')
+            if sym == '.':
+                res = '|' if num_trees >= 3 else sym
+            elif sym == '|':
+                res = '#' if num_lumb >= 3 else sym
+            elif sym == '#':
+                res = sym if num_lumb >= 1 and num_trees >= 1 else '.'
+            # print(f'[{x}, {y}]: {sym} became {res}. Trees: {num_trees}, Lumber: {num_lumb}, Neighbors: {len(adj)}')
+            new_row.append(res)
+        new_m.append(new_row)
+    m = new_m
+    print()
+    print(f'Minute {i + 1}:')
+    print_map()
+    sleep(1)
+
+
+num_trees = sum([row.count('|') for row in m])
+num_lumb = sum([row.count('#') for row in m])
+num_open = sum([row.count('.') for row in m])
+
+print(f'Trees: {num_trees}, Lumber: {num_lumb}, Open: {num_open}')
+print(f'Result: {num_lumb * num_trees}')
diff --git a/day-18/02.py b/day-18/02.py
new file mode 100644
index 0000000..dfcda25
--- /dev/null
+++ b/day-18/02.py
@@ -0,0 +1,79 @@
+from time import sleep
+
+m = []
+old_m = dict()
+
+with open('input.txt', 'r') as f:
+    for line in f.readlines():
+        row = []
+        for sym in line.strip():
+            row.append(sym)
+        m.append(row)
+
+def print_map(m):
+    for row in m:
+        print(''.join(row))
+
+
+def get_adjacent(x, y):
+    adj = []
+    for i in [-1, 0, 1]:
+        for j in [-1, 0, 1]:
+            if not (i == 0 and j == 0):
+                if x + i < 0 or y + j < 0:
+                    continue
+                try:
+                    adj.append(m[x + i][y + j])
+                except:
+                    pass
+    return adj 
+
+def get_res_val(m):
+    num_trees = sum([row.count('|') for row in m])
+    num_lumb = sum([row.count('#') for row in m])
+    return num_lumb * num_trees
+
+for i in range(1000000000):
+    i = i + 1
+    new_m = []
+    for x, row in enumerate(m):
+        new_row = []
+        for y, sym in enumerate(row):
+            adj = get_adjacent(x, y)
+            num_trees = adj.count('|')
+            num_lumb = adj.count('#')
+            if sym == '.':
+                res = '|' if num_trees >= 3 else sym
+            elif sym == '|':
+                res = '#' if num_lumb >= 3 else sym
+            elif sym == '#':
+                res = sym if num_lumb >= 1 and num_trees >= 1 else '.'
+            new_row.append(res)
+        new_m.append(new_row)
+    m = new_m
+
+    if m in old_m.values():
+        for j, tmp in old_m.items():
+            if tmp == m:
+                break
+        print(f'Loop detected: {j} and {i} are the same')
+        break
+
+    old_m[i] = m
+    if i % 100 == 0:
+        print(i, get_res_val(m))
+
+loop_start = j
+first_iteration = i
+
+gap = first_iteration - loop_start
+tmp = (1000000000 - loop_start) % gap
+
+print('gap', gap)
+print('tmp', tmp)
+print(get_res_val(old_m[loop_start + tmp]))
+print(get_res_val(old_m[440]))
+
+# print_map(m)
+# print()
+# print_map(old_m[j])
diff --git a/day-18/example.txt b/day-18/example.txt
new file mode 100644
index 0000000..b4d54bb
--- /dev/null
+++ b/day-18/example.txt
@@ -0,0 +1,10 @@
+.#.#...|#.
+.....#|##|
+.|..|...#.
+..|#.....#
+#.#|||#|#|
+...#.||...
+.|....|...
+||...#|.#|
+|.||||..|.
+...#.|..|.
\ No newline at end of file
diff --git a/day-18/input.txt b/day-18/input.txt
new file mode 100644
index 0000000..cfe4101
--- /dev/null
+++ b/day-18/input.txt
@@ -0,0 +1,50 @@
+..|..|.|.|.||..#.#|...|..#.|.........|.......|..#.
+#.|.........|||....#....|....##||.....|.|.........
+..||......#.#||#.#.......#..#.#.###...|.#..#...#..
+|....#....|.##.##.....##...##|..|....|..|#||...###
+#|...|.#|..|......#.##....#|....|...|#......|.#|.|
+..|....##.##.#..||##...#..##|......|...|#.||.#.#..
+.#...#||...........#|.....|##....#.#...|#.|###..|.
+||....#.#.|...||...###|.|#.....#.|#.|#...#.#.|...#
+...#.....||.......#....#|###|####..|#|.###..||.#.#
+|#|...||..##.||.||..#.#.|..#...#..|........#..|#..
+#....||.|.....|.|.#|.##.|..|.#.....|..|.....#|.|..
+|..||#........|#.|..|.|...#..#....#.|.....||#.#...
+..|...||.|##||##..|...#|.....|#.|....#....||#.##..
+#|..#|..||...|..|.|#|..##.#.......#|#....#||...#..
+|#|.|...|..##...|.#||#..#...#....||.#.|...##..|..#
+|..||.#.#..|....#...#.#..#..#...||.|.#.#.#.....#|.
+.|##.####..||.#.|#.###....#...#.|..#.#.##.|..##..#
+#|.......#......|.#..|.....||.|.#||#.#.##.#|....|.
+.|..#.|#.##|....#......|.#||..|#..##.|..#......###
+..###....#.||.#..|##.##..#|.#...|#|...#.|.|...#|#.
+........||......|##||##..###|..|.##.#..#|##...|..#
+.#....|....|...##.#.||##.....#|...|#.#||...#.....|
+#...#|...###.|.|..|..#.|###.|.#.|.####|...|.#..|#.
+...#..|.....|.#.##.|.#.#..|..##.##.#..|...#...|#..
+..###.#|##|#.#.......|.|...||###|.#.........#..|..
+..|#...||.#.#..|...|..#||...|.#.#......#...|..#...
+.||..........|.#....|.||...|#.|.|||..||........|#.
+#.##.#||..|.|#...|..#|.|#......|.||.......|...|#..
+#.||.||#...#|||.....|.|.|.|...||.#..#.#.#|..|||.|.
+.#...#...||||#...##.#.#......#|......#.|.....|#||.
+.#|.###|#||.|#...#.|..|.|#.|#..#..#...|.|.|...|.|.
+..#|.|#|..##|.||.|.....|#...#..|.|#....|.|..|..|#.
+#....|..#.#.......#||..#....|.|..#.#|..#...|#.#.|.
+#.#.|..|...#|.###||.#.....#|#|#.##..|.|#|....|....
+....|#.#.||..|..#...|...|..|...|..#..#......#|.#..
+..#..#|.|.|#.#.|.|.#.#.....#..|..#..|.......||#|#.
+#|......|#..|.#...##|....|..|#||..|..||...||.#....
+#..|#.......||.....|.||||#.|#.|....#|#....|#.#....
+#.##.#.#..||......#...|......|#|...|.||.#.|..|....
+####.|...||##|#|.......|||.#.#.....#...##.#|..#...
+..|..|||..|.||#|#.|..#.|..#.|........###......#..|
+..#|.....|||||#..||.....##..#...|||.....#......#.#
+.#.|.||#.##.......||.#.||..#...|##..|.#.#...|...|.
+.##........|..||.|.#|.|.||||..#...#..|..|#|#..|#|.
+.#.#.....#|||..|...#.|...|...#.||..||###|.#|......
+|.|#..#.#.|||||.#|.|......#.|#.||.....#..#...|#.|.
+...|....#.###|.#.##......|#.##.....#.|.##.#......#
+.#.#.....|..#.##..#|#|..#.#|##..##|..##.#..#....||
+..#.#.|.....#.|..#.|.|#...|....#...|..|.|..#||...|
+|.||.|...|...|##..||....|#.|..#..##....|#.#|##..|.
\ No newline at end of file