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:
4, 10, ['7991', '7969', '8383', '1935', 'U', 'Y', '6063', 'f', '985', '1303', '6245', 'c', 'j', 'P', 's']
answer:
1935UY6063f9851303


question:
21, 24, ['F', '9793', 'R', '7633', '6831', 'P', '4285', '7887', 'H', '307', '4865', 'M', '4521', '565', 'e', 'i', 'f', '8845', 'T', 'N', '3485', 'n', '1731', '4963', 'Y', '7493']
answer:
3485n17314963


question:
2, 10, ['o', '4527', 'B', '469', 'Z', 'g', '9215', 'k', 'l', '6599', 'j', '3139']
answer:

4527B469Zg9215kl6599