gains lists the positive elevation gains of consecutive trail segments. A climb is a contiguous block of segments whose gains are strictly increasing. The steepness of a climb is the sum of its gains. Return the largest steepness of any climb in the list.
Examples
Input: gains = [10, 20, 30, 5, 10, 50]
Output: 65
Explanation: 5, 10, 50 is a climb worth 65, more than 10, 20, 30 (60).
Input: gains = [12, 17, 15, 13, 10, 11, 12]
Output: 33
Explanation: 10, 11, 12 sums to 33.
Constraints
1 <= len(gains) <= 10**51 <= gains[i] <= 100- Target: O(n) time, O(1) extra space.
Goals
- Accumulate a sum over a strictly increasing run
- Restart the accumulation when the run breaks