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:
1, 2, ['T', 'r']
answer:
Tr


question:
13, 14, ['r', '2521', '8819', '2173', 'U', 'I', 'G', '2499', 'c', '6667', 'K', '1187', '3605', '9115', '3905', '7135', '3173', 'F']
answer:
36059115


question:
12, 15, ['n', '5149', 't', '9007', '5867', '5319', '8167', '5867', '4617', '353', 'I', '9915', '5999', 'p', '417', 'X', '5097', '6699', 'U', 'A']
answer:

99155999p417