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: 1, 2, ['3303', '6127']

SOLUTION: 72163033

PROBLEM: 2, 24, ['3069', 'R', '4075', '5121', 'M', '4707', '57', 'm', '559', '8679', 'i', 'S', '1721', '6601', 'M', 'r', 'a', '4149', '8929', 'K', '7479', '587', '6425', '5115', '2363', '1887', '207', 'b', 'n']

SOLUTION:
511552467859747K92989414arM10661271Si9768955m757074M12155704R