Shortest Subarray Whose Sum Exceeds N

Write a function that returns the length of the shortest contiguous sublist whose sum of all elements strictly exceeds n.

Examples

min_length([5, 8, 2, -1, 3, 4], 9) ➞ 2

min_length([3, -1, 4, -2, -7, 2], 4) ➞ 3
# Shortest sublist whose sum exceeds 4 is: [3, -1, 4]

min_length([1, 0, 0, 0, 1], 1) ➞ 5

min_length([0, 1, 1, 0], 2) ➞ -1

Notes

• The sublist should be composed of contiguous elements from the original list.
• If no such sublist exists, return -1.