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:
[121, 412, 372, 145, 352, 232, 196, 164, 421, 345, 419, 136, 186, 252, 216, 413, 106, 143, 423, 330]

Ex Output:
317


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, 231, 174, 281, 329, 160, 313, 237, 139, 229, 104, 50, 328, 433, 92, 201, 95, 385, 407, 41]

Ex Output:

392


