Add day 9 solutions

1 files changed, 32 insertions, 0 deletions

diff --git a/2021/09/puzzle-1.py b/2021/09/puzzle-1.py
new file mode 100755
index 0000000..5ab2f45
--- /dev/null
+++ b/2021/09/puzzle-1.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+
+
+def main() -> None:
+	with open("input", "r", encoding="utf-8") as f:
+		data = list(map(lambda l: [int(n) for n in l.strip()], f.readlines()))
+
+	acc = 0
+	rows = len(data[0])
+	cols = len(data)
+
+	for i in range(cols):
+		for j in range(rows):
+			if (
+				i != 0
+				and data[i - 1][j] <= data[i][j]
+				or i != cols - 1
+				and data[i + 1][j] <= data[i][j]
+				or j != 0
+				and data[i][j - 1] <= data[i][j]
+				or j != rows - 1
+				and data[i][j + 1] <= data[i][j]
+			):
+				continue
+
+			acc += data[i][j] + 1
+
+	print(acc)
+
+
+if __name__ == "__main__":
+	main()