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: 7, 19, ['1899', '4271', 'D', '8199', 'm', '4847', '3631', '7637', '4429', '7541', 'g', '6763', '8281', 'N', '5505', '3547', '2173', 'P', 'R', '655', '4599', 'y', 'Z', '2059', '3229', 'c', '4363', '8351']

SOLUTION: 3631763744297541g67638281N550535472173PR

PROBLEM: 16, 16, ['9005', 'k', '8959', '781', 'L', 'q', '5191', 'O', '9913', 'i', '4207', '7995', 'j', '8783', 'x', 'D']

SOLUTION: D

PROBLEM: 18, 29, ['7409', '3159', '3481', '5805', 'X', '8787', '133', '5655', 'Y', '3997', '1689', 'b', '1761', '7413', '1765', 'A', 'C', 'q', '4189', '8753', '2897', '5533', '3655', 'm', '8545', '2341', 'G', '8793', 'h', 'd']

SOLUTION:
q41898753289755333655m85452341G8793h