diff --git a/2019/aoc2019/day17.py b/2019/aoc2019/day17.py
new file mode 100644
index 0000000..7c5cdde
--- /dev/null
+++ b/2019/aoc2019/day17.py
@@ -0,0 +1,26 @@
+from typing import TextIO
+
+from aoc2019.intcode import Computer, read_program
+
+
+def part1(data: TextIO) -> int:
+    computer = Computer(read_program(data))
+
+    computer.run()
+
+    output = ''.join(chr(c) for c in computer.output)
+
+    tiles = set()
+
+    for y, line in enumerate(output.splitlines()):
+        for x, c in enumerate(line):
+            if c == '#':
+                tiles.add((x, y))
+
+    total = 0
+
+    for x, y in tiles:
+        if (x - 1, y) in tiles and (x + 1, y) in tiles and (x, y - 1) in tiles and (x, y + 1) in tiles:
+            total += x * y
+
+    return total