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, 17, ['l', '4279', 'O', '8503', '8669', 'f', 'U', 'I', 'A', 'q', 'q', '6735', 'S', 't', '7713', '8889', 'F', '8879', 'g', '4247', '9465', 'z']
answer:
4279O85038669fUIAqq6735St77138889F


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


question:
15, 21, ['b', 'g', '3473', 'd', 'q', 'J', 'N', '9317', '6001', 'c', 'V', 'W', 'U', 'm', '3347', '3871', 'v', 'j', '1523', 'B', 'A', '7309', 'M', '3183']
answer:

33473871vj1523BA