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, ['G', 'g', '4575', '7719', 'G', 'g', '9563']
answer:
Gg4575


question:
3, 6, ['3315', 't', 'B', 'K', '631', 'e', '3715', 'o', '2761', 'e', 'a', 'K', 'J', '6837']
answer:
BK631e


question:
1, 7, ['6963', 'X', '723', '9825', 'g', '7661', '8259', '8767']
answer:

6963X7239825g76618259