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+# 1800. Maximum Ascending Subarray Sum
+
+"""
+given an array of positive integers 'nums', return the maximum possible sum
+of an ascending subarray in 'nums'. a subarray is defined as a contiguous
+sequence of numbers in an array.
+"""
+
+
+class Solution(object):
+ def maxAscendingSum(self, nums):
+ """
+ :type nums: List[int]
+ :rtype: int
+ """
+ ans, sum = 0, nums[0]
+ for i in range(len(nums)):
+ if nums[i] <= nums[i - 1]:
+ ans = max(ans, sum)
+ sum = 0
+ sum += nums[i]
+ return max(ans, sum)
+
+
+if __name__ == "__main__":
+ obj = Solution()
+ print(obj.maxAscendingSum(nums=[10, 20, 30, 5, 10, 50]))
+ print(obj.maxAscendingSum(nums=[10, 20, 30, 40, 50]))
+ print(obj.maxAscendingSum(nums=[12, 17, 15, 13, 10, 11, 12]))