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, 4, ['Y', 'f', '3041', 'O', '9579', '1187']
answer:
O


question:
4, 27, ['u', '7157', 's', 'H', '9231', '5861', '6433', '1059', '887', 'm', '9571', '2873', '2305', 'y', '1171', '3205', '321', '3299', '2217', 'I', '701', '8243', 'b', '627', '2531', '4151', 'B', 'G']
answer:
H9231586164331059887m957128732305y1171320532132992217I7018243b62725314151B


question:
9, 13, ['3605', 'j', 'i', '1593', 'U', '2073', '4373', '6569', 'A', '315', '4629', 'G', '6917', '4835', '9531', 's', 'w', '9699', 'z', '8325', 'V']
answer:

A3154629G6917