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, 3, ['R', '6273', 'V', 'M', 'z', 'i']
answer:
R6273V


question:
1, 2, ['7161', '3547', 'u']
answer:
71613547


question:
2, 29, ['l', 'r', '1637', '8995', 'T', 'B', '97', '1671', 'I', '4543', '349', '7777', 'Z', '6761', '6981', 'y', 'E', '6859', 'O', 'X', '8741', 'b', '4783', 'X', '1497', 'c', '2537', 'W', 'Y']
answer:

r16378995TB971671I45433497777Z67616981yE6859OX8741b4783X1497c2537WY


