diff --git a/2025/d03/ex1/ex1.py b/2025/d03/ex1/ex1.py
new file mode 100755
index 0000000..7d6f36b
--- /dev/null
+++ b/2025/d03/ex1/ex1.py
@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+
+import sys
+
+
+def solve(input: list[str]) -> int:
+    def parse(input: list[str]) -> list[list[int]]:
+        return [[int(c) for c in line] for line in input]
+
+    def max_joltage(bank: list[int]) -> int:
+        first = bank.index(max(bank[:-1]))
+        second = bank.index(max(bank[first + 1 :]))
+        return bank[first] * 10 + bank[second]
+
+    batteries = parse(input)
+    return sum(map(max_joltage, batteries))
+
+
+def main() -> None:
+    input = sys.stdin.read().splitlines()
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()