Add solution to 2025-12-03

Author: fuglede

2025/day03/solutions.py

@@ -0,0 +1,14 @@
+with open("input") as f:
+    ls = f.read().strip().split("\n")
+
+
+def joltage(a, to_choose):
+    res = i = 0
+    for end_index in range(len(a) - to_choose, len(a)):
+        i = max(range(i, end_index + 1), key=a.__getitem__) + 1
+        res = res * 10 + a[i - 1]
+    return res
+
+
+for to_choose in (2, 12):
+    print(sum(joltage(list(map(int, l)), to_choose) for l in ls))