Add 2025 day 7 solutionsHEADmaster

1 files changed, 23 insertions, 0 deletions

diff --git a/2025/07/puzzle-1.py b/2025/07/puzzle-1.py
new file mode 100755
index 0000000..0c30dfa
--- /dev/null
+++ b/2025/07/puzzle-1.py
@@ -0,0 +1,23 @@
+#!/usr/bin/python3
+
+
+def main() -> None:
+	with open('input', 'r') as f:
+		grid = tuple(tuple(x.strip()) for x in f.readlines())
+
+	xs = set()
+	xs.add(grid[0].index('S'))
+	cnt = 0
+
+	for row in grid[1:]:
+		for i, ch in enumerate(row):
+			if ch == '^' and i in xs:
+				cnt += 1
+				xs.remove(i)
+				xs.add(i - 1)
+				xs.add(i + 1)
+
+	print(cnt)
+
+if __name__ == '__main__':
+	main()