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: 1, 2, ['3877', '2107']

SOLUTION: 38772107

PROBLEM: 17, 20, ['j', '3799', '2457', '2975', '691', '8473', 'R', 'o', '4005', 'b', 'A', '8207', '9355', '3133', 'W', 'N', '2233', 'p', '1185', 'w', '6119', 'W', 'O', '3359', 'R', '2927', 'C', '3629', 'l']

SOLUTION: 2233p1185w

PROBLEM: 1, 2, ['W', '7873']

SOLUTION:
W7873