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:
[77, 139, 400, 409, 85, 354, 277, 334, 389, 415, 388, 193, 207, 398, 38, 127, 469, 44, 135, 179]

Ex Output:
431


Ex Input:
[199, 461, 73, 177, 360, 257, 168, 273, 18, 19, 151, 356, 234, 89, 138, 85, 172, 425, 56, 228]

Ex Output:
443


Ex Input:
[236, 128, 64, 438, 241, 141, 256, 492, 68, 462, 192, 426, 48, 366, 13, 26, 385, 320, 324, 137]

Ex Output:

479