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:
10, 16, ['s', '9789', '1437', '1339', 'l', '4411', 'b', 'd', '4489', 'U', '2967', 'j', 'g', '2589', '8319', 'I']
answer:
U2967jg25898319I


question:
2, 16, ['3625', 'Q', 'f', '6697', 'o', 'n', '1471', '2327', 'X', 'l', '6125', '2215', 'R', '221', '6415', 'Y']
answer:
Qf6697on14712327Xl61252215R2216415Y


question:
3, 3, ['1241', '977', '5153', '3535', '8723', '5323', 'h', '847', '8697', '8871', 'g', '6325', '207', '8091', 'g', 'A', 'H', 'G', '2381', '6955', 'H', 'K', 'W', 'k', '9713', '8315', 'h', 'Z', 's']
answer:

5153