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: 1, 2, ['S', '7763']

SOLUTION: 3677S

PROBLEM: 1, 9, ['g', '3007', '4827', '6665', '711', '6997', '137', 'X', '7383', 'q', 'v', 'K', '267', '3691', 'G', '7925', '8327', 'l']

SOLUTION: 3837X7317996117566672847003g

PROBLEM: 16, 24, ['L', 's', 'd', '2359', '9163', '3987', 'z', 'f', 'g', '5173', 'B', 'j', 'P', 'v', '7055', '9097', '5847', 'k', '1347', '4775', 'y', 't', '1795', '5243']

SOLUTION:
34255971ty57747431k74857909