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:
[421, 390, 263, 376, 486, 468, 247, 60, 283, 304, 259, 431, 488, 127, 456, 148, 344, 377, 305, 407]

Ex Output:
428


Ex Input:
[367, 449, 79, 374, 26, 423, 287, 185, 418, 359, 265, 246, 92, 60, 30, 305, 285, 98, 421, 39]

Ex Output:
423


Ex Input:
[286, 487, 492, 203, 313, 204, 269, 245, 294, 499, 148, 134, 396, 166, 305, 137, 251, 55, 364, 231]

Ex Output:

444