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:
4, 6, ['1399', 'd', 'X', '4795', 'H', 'R']
answer:
4795HR


question:
12, 14, ['L', 'k', 'r', '5885', 'T', '117', '8029', 'z', '2773', 'I', 'X', '3375', 'e', 'N', 'a', '7099', 'I', '8579']
answer:
3375eN


question:
10, 13, ['6263', '2475', '4125', '425', '5399', '9001', 'x', '2141', 'v', '8099', '9743', '5973', 'U', 'I', 'j', 'C']
answer:

809997435973U