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, 20, ['v', 'B', '2287', '1923', 'C', '8477', '4115', '803', '6579', 'u', 'x', 'b', 'J', '4007', '3505', 'M', 'g', 'Z', '2887', 'U', 'S', 'Y', 'i']
answer:
B22871923C847741158036579uxbJ40073505MgZ2887U


question:
3, 6, ['d', '2387', 'p', 'I', '2663', 'm', '4919', 'n', 'J']
answer:
pI2663m


question:
6, 8, ['3397', '8355', 'f', 'A', '2581', '5511', '7389', '1403', '9313', 'y', '4005', 'J', '9405', '2029', 'D', 'I', '21', 'y', '4721', '1085', 'j', '9967', '291']
answer:

551173891403