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:
5, 13, ['G', '4913', 'i', 'b', 'Q', '6937', '4251', 'Z', '535', '5563', 'x', '4813', '363', '1985', '3913', 'w', 'o', 'U', 'y']
answer:
Q69374251Z5355563x4813363


question:
17, 19, ['6519', '9015', 'i', '3363', '8547', 'x', 'f', 'H', '5557', '2135', '1559', 'S', 'b', '4833', '7801', '7375', '3729', 'y', '8667', 'G', '7723', '4571', 'J', '1997', '8663', 'l', 'b', 'T']
answer:
3729y8667


question:
2, 8, ['I', 'y', '3183', '6161', 'C', '4697', '2139', 'B', 'a', 'd', 'w', 'S']
answer:

y31836161C46972139B