TASK DEFINITION: In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting string. 'i' and 'j' will be non-negative, and will always have a value less than the length of A. 'i' will always be less than 'j'. Perform the operations in order, i.e., do not reverse first and then concatenate.
PROBLEM: 4, 5, ['S', 'S', 'L', '7199', '3259', '8515', '8657', '8201', 'V']

SOLUTION: 95239917

PROBLEM: 14, 19, ['2487', 'z', '4131', 'I', 'k', 'o', 'T', '5069', '2815', 'b', '1097', 'E', '3231', 'k', '7187', '717', '3039', 'm', 'X', 'M', '9547', '2727', 'L', '8193', '3519', '3619']

SOLUTION: Xm93037177817k

PROBLEM: 5, 8, ['1275', 'R', '6921', '4593', '535', 'v', 'P', 'g', '9651', '3185', 'N', '1001', 'T', '1471', '1765', 'e', 'f', 'v', '8217', '5019', '7481', '5767', 'm', '1625', 's', '3479', '6303', 'F', 'R', 'O']

SOLUTION:
gPv535