instruction:
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.
question:
8, 13, ['469', '2079', 'r', '3969', '9143', 'K', 'U', 'w', 'U', 'b', 'N', '8587', '7767', 'f']
answer:
wUbN85877767


question:
3, 19, ['6195', '8547', '3909', '2045', '583', 'C', '5559', '2001', '2415', '8759', '8159', 'J', '7097', '3051', '7349', 'z', '1005', 'B', '2683', 'h', 'd']
answer:
39092045583C55592001241587598159J709730517349z1005B2683


question:
4, 19, ['N', 'H', 'j', '7433', '429', '9775', 'r', '4595', 'T', '4855', 'V', '1137', '883', '8211', 'F', 'D', 'j', '1115', 'Q']
answer:

74334299775r4595T4855V11378838211FDj1115Q