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:
7, 8, ['9131', 'a', '1233', 'B', '2501', 'b', '7551', '3155', 'K', 'K', '2205', 'H', '2059', '6079', '6225', '9781', '5759', 'a', 'W', '8557', 't', 'j']
answer:
75513155


question:
17, 18, ['7971', 'D', '2791', 'E', '5517', 'I', 'u', '9333', 'i', '1933', 'y', 'C', '1829', '8197', 'l', '5963', '4535', '5009', '4841', 'G', '8553', '1505']
answer:
45355009


question:
1, 2, ['S', 'Y', '5069', 'K', '9433']
answer:

SY