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:
[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:
[197, 44, 239, 426, 356, 403, 75, 159, 55, 106, 199, 254, 92, 210, 334, 319, 288, 402, 129, 499]

Ex Output:
455


Ex Input:
[301, 312, 253, 158, 28, 298, 428, 334, 472, 295, 259, 160, 289, 213, 491, 407, 169, 152, 475, 457]

Ex Output:

463