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:
[379, 166, 33, 28, 246, 461, 332, 95, 67, 80, 270, 279, 55, 31, 70, 173, 305, 35, 92, 223]

Ex Output:
433


Ex Input:
[394, 96, 237, 138, 129, 418, 198, 18, 420, 465, 375, 33, 216, 59, 245, 276, 387, 144, 378, 431]

Ex Output:
447


Ex Input:
[439, 406, 106, 253, 361, 393, 232, 269, 64, 208, 234, 354, 231, 307, 47, 31, 377, 80, 400, 294]

Ex Output:

408