TASK DEFINITION: In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to concatenate all elements of A from the ith element to the jth element, and print the resultant 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.
PROBLEM: 2, 18, ['9999', '5437', '9821', 'o', '4457', '4227', 'v', '4715', '9195', 'I', 'J', 'o', '443', '8377', 'j', '1185', 'K', 'z', 'q', '8353']

SOLUTION: 54379821o44574227v47159195IJo4438377j1185Kz

PROBLEM: 2, 16, ['3625', 'Q', 'f', '6697', 'o', 'n', '1471', '2327', 'X', 'l', '6125', '2215', 'R', '221', '6415', 'Y']

SOLUTION: Qf6697on14712327Xl61252215R2216415Y

PROBLEM: 1, 4, ['S', '6463', '7721', '6777']

SOLUTION:
S646377216777