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, 4, ['5237', 'X', '1691', '5405']

SOLUTION: X16915405

PROBLEM: 8, 9, ['4155', 'z', '1045', 'b', '721', '6473', 'l', 'k', 'M', '8775', '2565', 'P', '669']

SOLUTION: kM

PROBLEM: 1, 14, ['4083', '9365', '1023', '3391', 'R', '8397', '749', '4375', 'y', 'M', '9769', 'y', 'y', 'f', '2961']

SOLUTION:
4083936510233391R83977494375yM9769yyf