In this task, you are given a list of integers you need to calculate and return the range of the integers which is the difference between maximum and minimum element in the list.

Ex Input:
[154, 425, 267, 492, 204, 337, 255, 79, 426, 101, 103, 230, 265, 80, 473, 340, 396, 394, 92, 69]

Ex Output:
423


Ex Input:
[399, 53, 213, 28, 417, 457, 69, 189, 433, 54, 369, 497, 202, 234, 103, 45, 232, 482, 18, 398]

Ex Output:
479


Ex Input:
[259, 255, 382, 364, 422, 258, 423, 63, 474, 455, 40, 47, 404, 251, 326, 130, 113, 94, 84, 98]

Ex Output:

434