diff --git a/2016-python2/output/day_18.py b/2016-python2/output/day_18.py
new file mode 100644
index 0000000..6803276
--- /dev/null
+++ b/2016-python2/output/day_18.py
@@ -0,0 +1,32 @@
+def solve(data):
+    cols = len(data)
+    prevrow = [t == "." for t in data]
+    p1 = sum(prevrow) + sum(
+        sum(prevrow := [issafe(prevrow, i) for i in range(cols)]) for _ in range(39)
+    )
+    p2 = p1 + sum(
+        sum(prevrow := [issafe(prevrow, i) for i in range(cols)])
+        for _ in range(400_000 - 40)
+    )
+    return p1, p2
+
+
+def issafe(row, i):
+    match i:
+        case 0:
+            return row[1]
+        case n if n == len(row) - 1:
+            return row[-2]
+        case _:
+            lt, rt = row[i - 1], row[i + 1]
+            return not lt != rt
+
+
+if __name__ == "__main__":
+    with open("./input/18.txt", "r") as f:
+        inp = f.read().strip()
+
+    p1, p2 = solve(inp)
+
+    print(p1)
+    print(p2)