1 files changed, 7 insertions, 2 deletions

diff --git a/2025/09/a.py b/2025/09/a.py
index 5fdb11b..8733737 100644
--- a/2025/09/a.py
+++ b/2025/09/a.py
@@ -1,6 +1,11 @@
 import fileinput
 
 with fileinput.input() as lines:
-        for line in lines:
-                ...
+        a = [tuple(int(x) for x in l[:-1].split(',')) for l in lines]
 
+s = 0
+for i in range(len(a)):
+        for j in range(i+1, len(a)):
+                s = max(s, (abs(a[i][0]-a[j][0])+1) * (abs(a[i][1]-a[j][1])+1))
+
+print(s)