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:
2, 8, ['p', '7485', '2809', '1217', 'P', '7185', '2899', 'l']
answer:
748528091217P71852899l


question:
1, 5, ['u', '157', '113', '4103', 'n', 'R', '6183', 'e', '439', '9053', 'k', 'z', '8999', '9613']
answer:
u1571134103n


question:
3, 5, ['8817', 'A', 'X', '1349', '8247']
answer:

X13498247