diff --git a/2019/16/example b/2019/16/example
new file mode 100644
index 0000000..a0d6069
--- /dev/null
+++ b/2019/16/example
@@ -0,0 +1 @@
+80871224585914546619083218645595
diff --git a/2019/16/script.py b/2019/16/script.py
new file mode 100644
index 0000000..687ed15
--- /dev/null
+++ b/2019/16/script.py
@@ -0,0 +1,38 @@
+from GhostyUtils import aoc
+
+
+def fft(signal: list[int]) -> list[int]:
+ pattern = [0, 1, 0, -1]
+ output = []
+ for o in range(len(signal)):
+ out = 0
+ for i, n in enumerate(signal):
+ mul = pattern[((i + 1) // (o + 1)) % len(pattern)]
+ out += n * mul
+ output.append(abs(out) % 10)
+ return output
+
+
+def test() -> bool:
+ data = [
+ {'in': "12345678",
+ 'out': "48226158"},
+ ]
+ for d in data:
+ input = [int(n) for n in d['in']]
+ output = [int(n) for n in d['out']]
+ assert fft(input) == output
+
+
+def main():
+ test()
+
+ signal = [int(n) for n in aoc.read()]
+
+ for _ in range(100):
+ signal = fft(signal)
+ print(''.join(str(s) for s in signal[:8]))
+
+
+if __name__ == "__main__":
+ main()
diff --git a/README.md b/README.md
index 20677e4..979b033 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@ My solutions to the yearly Advents of Code
- Advent of Code - 157/450 ⭐
+ Advent of Code - 158/450 ⭐
@@ -179,6 +179,9 @@ My solutions to the yearly Advents of Code
+
+ 
+