Given a list of 10 numbers, return the maximum possible total made by summing just 5 of the 10 numbers.
max_total([1, 1, 0, 1, 3, 10, 10, 10, 10, 1]) ➞ 43
max_total([0, 0, 0, 0, 0, 0, 0, 0, 0, 100]) ➞ 100
max_total([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) ➞ 40
You can select any 5 numbers from the given array to form maximum possible total.