diff --git a/2022/d01/ex1/ex1.py b/2022/d01/ex1/ex1.py
new file mode 100755
index 0000000..00c6305
--- /dev/null
+++ b/2022/d01/ex1/ex1.py
@@ -0,0 +1,20 @@
+#!/usr/bin/env python
+
+import sys
+
+
+def solve(input: list[list[int]]) -> int:
+    return max(map(sum, input), default=0)
+
+
+def main() -> None:
+    input = [
+        [int(line) for line in group.splitlines()]
+        for group in sys.stdin.read().split("\n\n")
+        if group
+    ]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()