From 9f6b4d3cdd0e140769afb21a8085ac2d20dbc47f Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Sat, 9 Dec 2023 13:41:17 +0100
Subject: AAH
---
2023/09/solve.py | 13 +++++++++++++
1 file changed, 13 insertions(+)
create mode 100644 2023/09/solve.py
(limited to '2023/09')
diff --git a/2023/09/solve.py b/2023/09/solve.py
new file mode 100644
index 0000000..aa9ec70
--- /dev/null
+++ b/2023/09/solve.py
@@ -0,0 +1,13 @@
+L = [[int(n) for n in l.strip().split(" ")] for l in open("input").readlines()]
+
+
+def predict(s):
+ f = []
+ while s:
+ f.append(s[-1])
+ s = [s[i] - s[i - 1] for i in range(1, len(s))]
+ return sum(f)
+
+
+print(sum(predict(l) for l in L))
+print(sum(predict(l[::-1]) for l in L))
--
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