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, 9, ['d', '1057', '5737', '6925', '6365', 'y', 'w', '6535', 'P', 'F']

SOLUTION: P5356wy56365296

PROBLEM: 5, 6, ['7565', '6525', '7421', 'u', '303', '1815', '273', '6725', 'i']

SOLUTION: 5181303

PROBLEM: 1, 13, ['n', 'Z', '9851', '3299', '7611', 'L', '3737', '8361', 'O', 'v', 'P', 't', 'F', '5103', 'e', 'k', 'D', '8699', '3153', '859', '4381', 'B', 'N', '7475']

SOLUTION:
FtPvO16387373L116799231589Zn