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, 8, ['9045', 'C', 'V', 'G', 'Q', 'I', '9821', 'D']

SOLUTION: 9821D

PROBLEM: 8, 23, ['5435', 'U', 'u', 'D', '2923', '1773', '977', 'r', '4341', 'v', '3685', 'i', '3605', '6297', 'x', '4065', '6503', 'c', '6943', 'r', 'e', '193', '2413']

SOLUTION: r4341v3685i36056297x40656503c6943re1932413

PROBLEM: 19, 19, ['H', '6291', '3255', 'O', '1855', '8567', 'p', 'S', '4217', '9945', 'b', '8841', 'G', 'v', '7951', '7733', 'Y', 'z', '5511', '9399', '5247', '3105', 'z', 'j']

SOLUTION:
5511