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.

Ex Input:
8, 8, ['137', 'b', '7765', 'l', 'E', '6783', '4243', '715', 'm', 'R', '4375', '8647', 'c', 'l', '5443', '2711', 'x', 'J', '3455', 'x']

Ex Output:
715


Ex Input:
8, 17, ['i', '9145', '4765', 'q', '3437', '3855', '4741', 'U', 'B', 'D', '8041', '1763', 'T', '7339', '1425', 'V', 'H', 'M']

Ex Output:
UBD80411763T73391425VH


Ex Input:
5, 12, ['2359', '6153', '4391', '5867', '9063', '247', 'D', '3257', 'c', '9435', 'A', 'o', '1141', 'D', 'I', '3537', '5555', '6457', '9959']

Ex Output:

9063247D3257c9435Ao