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: 5, 16, ['8475', 'y', 'z', 'M', '7495', 'p', '6073', '1545', '9065', '8957', 'z', 'Y', '863', '4153', '3381', '5513', 'K', 'H', '4083', '6175', 'H', '6463', 'G', '5217', 's', 'c']

SOLUTION: 315518333514368Yz7598560954513706p5947

PROBLEM: 1, 3, ['7761', '8153', '1073']

SOLUTION: 370135181677

PROBLEM: 4, 9, ['O', 'U', 'S', 'g', 'W', 'O', '8869', '6633', 'I', '1743', '8011', '8053', '3233', '7933', 'z']

SOLUTION:
I33669688OWg