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:
1, 21, ['t', 'E', 'd', '459', '6501', '5545', '9353', '3159', 'f', '2145', 'N', '6217', 'm', 'M', '5925', '1555', '9313', '4891', '3309', '3137', 'X', 'q', 'v']
answer:
tEd4596501554593533159f2145N6217mM592515559313489133093137X


question:
4, 14, ['9091', '9643', 'v', 'J', 'q', 'P', '5913', 's', 'F', 't', '8721', '2989', '4599', '4813', 'G', '8101', '3337', '9121', '601', 'H', 'z', 'W', 'I', '4653']
answer:
JqP5913sFt8721298945994813


question:
6, 12, ['773', '8285', '3537', '8429', 'H', 'D', 'X', '5405', '7959', 'J', 'r', '8045', '7171', 'x', 'H', '9105', 'G', 'q', '8999', 'n', 'M', '3059', '1665', '149', 'Q', 'P', 'U', 'U']
answer:

DX54057959Jr8045