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, 5, ['3123', '67', '6019', '9385', '8251', 'b', 'D', '4957', 'u', '2091']
answer:
312367601993858251


question:
11, 20, ['4081', '915', 'e', '765', '4125', '9603', '1557', 'C', 'L', 'k', 'd', 'h', '5317', 'J', '8587', 'm', 'B', '273', 'K', 'b', '951', '2385', 'v']
answer:
dh5317J8587mB273Kb


question:
1, 8, ['9489', '9373', '2447', 'Q', '3937', 'B', '227', '8571']
answer:

948993732447Q3937B2278571