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:
[317, 61, 408, 261, 187, 150, 423, 259, 453, 163, 322, 201, 273, 312, 382, 64, 34, 358, 294, 299]

Ex Output:
419


Ex Input:
[306, 182, 345, 103, 81, 19, 470, 76, 333, 282, 82, 259, 357, 28, 382, 217, 298, 84, 351, 85]

Ex Output:
451


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


